• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    razor blades or waxing. it is a razor blade having a substrate with a cutting edge that is defined by a sharp point. the substrate has a thickness of 1.60 to 1.75 micrometers and 9.25 to 10.00 micrometers measured at a distance of four micrometers and forty micrometers from the tip of the blade, respectively. a ratio of the thickness measured at four micrometers to the thickness measured at forty micrometers is between 0.165 to 0.185. substrate thickness is about 2.70 to 3.00 micrometers to eight micrometers from the blade tip, about 4.44 to 5.00 micrometers to sixteen micrometers from the blade tip with a measured thickness ratio at four micrometers and at eight micrometers between 0.56 to 0.62, and a measured thickness ratio at four micrometers to sixteen micrometers between 0.32 to 0.40. the shape of the blade edge is defined by the equation w=adn, where "a" is between 0.50 to 0.62 and "n" is between 0.76 to 0.80. an included angle less than 7 is measured at a distance of forty micrometers or greater from the tip of the blade. a nitride substrate can also be provided.
    公开号:BR112016027044B1
    申请号:R112016027044-4
    申请日:2015-05-15
    公开日:2021-07-20
    发明作者:Kenneth James Skrobis；Bin Shen；Yongqing Ju；Matthew Robert Stone
    申请人:The Gillette Company；
    IPC主号:
    专利说明:

    FIELD OF TECHNIQUE
    [0001] The present invention relates to razors or epilators and more particularly to razor blades or epilators with sharp and durable cutting edges. BACKGROUND
    [0002] A razor blade or epilator is typically formed of a suitable substrate material such as stainless steel, and a cutting edge is formed in a wedge-shaped configuration with an end tip having a given radius. Hard coatings such as diamond, amorphous diamond, diamond-like carbon material (Diamond Like Carbon, or DLC), nitrides, carbides, oxides or ceramics are often used to optimize strength, corrosion resistance and shave or waxability while maintaining required force while allowing thinner edges to be used with lower cutting forces. An outer layer of polytetrafluoroethylene (PTFE) can be used to provide friction reduction. Intermediate layers of materials containing niobium, chromium or titanium can help improve the bond between the substrate, typically stainless steel, and hard carbon coatings such as DLC.
    [0003] It is desirable to optimize the shape of the razor blade or shave substrate to reduce the cutting force required to cut hair. Such a reduction in cutting force will result in a more comfortable shave or shave. SUMMARY OF THE INVENTION
    [0004] The present invention provides a razor blade or depilation comprising a substrate. The substrate has a cutting edge that is defined by a sharp edge of the blade. The substrate has a thickness between about 1.60 and 1.75 micrometers measured at a distance of four micrometers from the tip of the blade and a thickness between about 9.25 and 10.00 micrometers measured at a distance of forty micrometers from the tip of the blade. The substrate has a ratio of the thickness measured at four micrometers to the thickness measured at forty micrometers and 0.185 out of 0.165. The substrate has a thickness between about 2.70 and 3.00 micrometers measured at a distance of eight micrometers from the tip of the blade, a thickness between about 4.44, and 5.00 micrometers measured at a distance of sixteen micrometers from the tip of the blade, a ratio between the thickness measured at four micrometers and the thickness measured at eight micrometers between and 0.56 0.62, and a ratio between the thickness measured at four micrometers and the thickness measured at sixteen micrometers between 0.32 and 0.40.
    [0005] The razor blade of the present invention comprises a cross-sectional shape of the blade edge defined by the equation w=adn, in which "w" is the thickness in micrometers of the blade tip at a distance "d" in micrometers from the tip of the blade, where "a" is a proportionality factor in the range of 0.50 to 0.62, and "n" is in the range of 0.76 to 0.80.
    [0006] Preferably, the substrate has a tip radius of about 125 to about 500 angstroms.
    [0007]The razor blade or epilator may comprise an intermediate layer joined to the substrate. The intermediate layer preferably comprises niobium, chromium, platinum, titanium, or any combination or alloys thereof. The razor blade or epilator may comprise a coating layer joined to the intermediate layer. The coating layer may comprise a material containing carbon or aluminum magnesium boride. The razor blade may or may not comprise an outer coating layer joined to the coating layer. The outer coating layer preferably comprises chromium. The razor blade or epilator may comprise an outer layer joined to the outer coating layer or the hard coating. The outer layer preferably comprises a polymer, which may comprise polytetrafluoroethylene.
    [0008]The razor blade or shave may comprise an included angle less than 7 degrees. The included angle is measured at a distance of forty micrometers or greater from the tip of the blade.
    [0009]The substrate of the razor blade or epilator can include only two facets on each side of said cutting edge.
    [0010] The razor blade or depilatory may include a nitride region disposed on or under a surface of the substrate, which may be formed by plasma nitriding. One or more layers can be bonded to the nitride substrate. DESCRIPTION OF DRAWINGS
    [0011] Although the descriptive report ends with claims that specifically mark and distinctly claim the subject matter which is considered to be the present invention, it is believed that the present invention will be more fully understood with the following description, together with the attached drawings.
    [0012] Figure 1 is a diagrammatic view illustrating a blade substrate.
    [0013] Figure 2 is a graph illustrating the profile of the edge of a razor blade or wax.
    [0014] Figure 3 is a diagrammatic view illustrating a blade substrate.
    [0015] Figure 4 is a diagrammatic view illustrating a sheet substrate with coatings disposed thereon, in an embodiment of the present invention.
    [0016] Figure 5 is a diagrammatic view illustrating a sheet substrate with coatings disposed thereon, in an alternative embodiment of the present invention.
    [0017] Figure 6 is a diagrammatic view illustrating a blade substrate with a nitride region in an alternative embodiment of the present invention. DETAILED DESCRIPTION
    [0018] Now with reference to Figure 1, a razor or shave blade 10 is shown. The razor or shave blade 10 includes a stainless steel body portion or substrate 11 with a sharp wedge-shaped (or edged) edge. cutting) which has a tip 12. Tip 12 preferably has a radius of about 125 to about 500 angstroms with facets 14 and 16 on each edge diverging from tip 12. Substrate 11 has a thickness 21 between about 1.60 and 1.75 micrometers measured at a distance 20 of four micrometers from the tip of the blade 12.
    [0019] The substrate 11 has a thickness 23 between about 2.7 and 3.00 micrometers measured at a distance 22 of eight micrometers from the tip of the blade 12.
    [0020] The substrate 11 has a thickness 25 between about 4.44 and 5.0 micrometers measured at a distance 24 of sixteen micrometers from the tip of the blade 12.
    [0021] The substrate 11 has a thickness 27 between about 9.25 and 10.00 micrometers measured at a distance 26 of forty micrometers from the tip of the blade 12.
    [0022] The substrate 11 has a ratio of thickness 21 measured at four micrometers from tip 12 to thickness 27 measured at forty micrometers from tip 12 between 0.165 and 0.185.
    [0023] The substrate 11 has a ratio of thickness 21 measured at four micrometers from tip 12 to thickness 23 measured at eight micrometers from tip 12 between 0.56 and 0.62.
    [0024] The substrate 11 has a ratio of thickness 21 measured at four micrometers from tip 12 to thickness 25 measured at sixteen micrometers from tip 12 between 0.32 and 0.40.
    [0025] Table 1 below shows the values contemplated in the present invention. The units for distance and thickness are micrometers.


    [0026]Thicknesses and thickness ratios provide a framework for improved shaving or waxing. Thicknesses and thickness ratios provide a balance between edge force and lesser cutting or sharpening force. A substrate with lower ratios will have inadequate strength, resulting in end-edge failure. A thicker substrate will have a higher cutting force, resulting in greater handling effort and greater user discomfort during shaving or waxing.
    [0027] According to the present invention, a cross-sectional shape of the blade 10 in the region described in Figure 1 can be defined by the equation w=adn, where "w" is the thickness in micrometers of the substrate at a distance "d " in micrometers from the tip of blade 12 and in which variable "a" is a proportionality factor that has a value in the range of 0.50 to 0.62, and variable "n" is an exponent that has a value that can be in the range of 0.76 to 0.80 for improved edge attributes such as strength, durability, and cutting performance.
    [0028] A graph 30 of the equation w=adn, with "a" in the range of 0.50 to 0.62 and "n" in the range of 0.76 to 0.80, of the present invention is shown in Figure 2 applying the range of thickness and distance values in Figure 1 as discussed above.
    [0029] Area 32 represents the edge profile of the present invention, while the remaining lines 34 illustrate the different edge profiles described in prior art bands "a" and "n" and, in particular, US patent No. 4,720 .918. As can be seen from graph 30, area 32 represents a new shape compared to the prior art.
    [0030]Substrate 11 can be a stainless steel material of any type to facilitate the production of a properly sharpened edge. The stainless steel of the present invention may preferably be a martensitic stainless steel comprising about 0.35% to about 0.6% carbon (C) and about 13% to about 14% chromium (Cr) . Martensitic steel may desirably comprise about 1.1% to about 1.5% molybdenum (Mo).
    [0031] Additionally, martensitic stainless steel may contain smaller, more finely distributed carbides, but with a similar overall carbon weight percentage. A finely distributed carbide material produces stiffer and more brittle substrates after the tempering process, and makes it possible to manufacture a thinner, stronger edge. An example of such a substrate material is a martensitic stainless steel with a more uniform average carbide size and a carbide density of at least about 200 carbides per square micrometer, more preferably at least about 300 carbides per square micrometer, and most preferably at least about 400 carbides or more per 100 square micrometers as determined by optical microscopic cross section.
    [0032] As discussed above, facets 14 and 16 of Figure 1 of the wedge-shaped edge of the blade 10 diverge from the tip 12. According to an alternative preferred embodiment of the present invention, each edge of the wedge-shaped tip of the blade shaving or waxing of the present invention may also include an additional facet. Returning to Figure 3, the blade 40 of the present invention is shown with a substrate 31 with only two facets on each side or edge. The first facets 44, 45 on each edge can, in general, initially be formed by known methods (eg milling). Similarly, the second facets 42, 43 may subsequently be formed so that they define the tip of the blade 41 (e.g., the facets 42, 43 diverge from the tip 41). The second facets 42, 43 can be at a distance 42a from the tip of the posterior blade 41 of about 12 to 50 micrometers. It is noted that a two-stage milling process can more preferably produce the first and second facets of the present invention. In some applications, a three-stage grinding process, which produces a third facet, may be used.
    [0033] Thus, the present invention contemplates that a distance of sixteen and/or forty micrometers from the tip of the blade 41 can be arranged within the second facets 42, 43 or within the first facets 44, 45.
    [0034] The first facets 44, 45 generally define an included angle 46 (or 49) which may be preferably below 7 °C, more preferably between 4 and 6 °C, and most preferably , about 6 degrees. The included angle 49, as shown, can be determined as half the angle formed between the intersection point 47 of the extended lines 48 (shown extending from facets but 44, 45 in dotted lines) of the first facets 44, 45 before the second facets 42, 43 are formed. It should be noted that lines 48 are not part of substrate 31, but serve only to illustrate how the included angle is determined. The included angle 46 may alternatively be determined by the angle disposed between a perpendicular or extending line 50 from the blade body to the first facet 44 or 45. Although illustrated in two different locations within the razor, the included angle is intended to be substantially identical (eg, included angle 46 is the same value as angle 49), as they generally represent the same geometry.
    [0035] The first facets 44, 45 can generally extend a distance 44a of about 175 to about 400 micrometers back from the tip of the blade 41.
    [0036] Thus, the present invention contemplates an included angle less than 7 degrees in the region of the blade having a distance greater than or equal to 40 micrometers back from the tip of the blade.
    [0037] Alternatively, the present invention preferably contemplates an included angle of less than 7 degrees where the razor or epilator blade includes only two facets on each side or edge of the razor or epilator blade.
    [0038] A reduced included angle allows the blades to be thinner back on the blade from the tip (for example, at or beyond 16 micrometers backward from the blade tip region, particularly in the region of 40 at 100 micrometers backward from the tip of the blade). This, with the geometry (eg thicknesses and thickness ratios etc) described above, provides a unique combination of strength and intensity not recognized in the art.
    [0039] Now with reference to Figure 4, there is shown a finished first blade 50 of the present invention which includes a substrate 11 (e.g. substrate 11 of Figure 1 shown), an intermediate layer 54, a hard coating layer 56, a outer coating layer 58 and an outer layer 52. Substrate 11 is typically produced from stainless steel, although other materials may be employed. An example of a razor blade with substrate, intermediate layer, hard coating layer, outer coating layer and outer layer is described in U.S. Patent No. 6,684,513.
    [0040] Intermediate layer 54 is used to facilitate bonding of hard coating layer 56 to substrate 11. Examples of suitable intermediate layer materials are niobium, chromium, platinum, titanium, or any combination or alloys thereof. A specific intermediate layer is produced from niobium with a thickness greater than about 100 angstroms and preferably less than about 500 angstroms. The middle layer can be from about 150 angstroms to about 350 angstroms thick. PCT 92/03330 describes the use of an intermediate layer of niobium.
    [0041] The hard coating layer 56 provides improved strength, corrosion resistance, and shave or waxability and can be produced from materials containing fine, micro, or nano-crystalline carbon (eg, diamond, amorphous diamond, or DLC ), nitrides (eg, boron nitride, niobium nitride, chromium nitride, zirconium nitride, or titanium nitride), carbides (eg, silicon carbide), oxides (eg, alumina, zirconia) or others ceramic materials (including nanolayers or nanocomposites). Materials containing carbon can be doped with other elements, such as tungsten, titanium, silver or chromium, by including these additives, for example, in the target during application by ion bombardment. Materials can also incorporate hydrogen, eg hydrogenated DLC. Preferably, the coating layer 56 is made of diamond, amorphous diamond or DLC. A particular embodiment includes DLC less than about 3,000 angstroms, preferably from about 500 angstroms to about 1,500 angstroms. DLC layers and deposition methods are described in U.S. Patent No. 5,232,568. As described in "Handbook of Physical Vapor Deposition (PVD) Processing", "DLC" is an amorphous carbon material that exhibits many of the desirable properties of diamond but lacks the crystalline structure of diamond.
    [0042] The outer coating layer 58 is used to reduce the rounding of the hard coating coated edge tip and to facilitate the adhesion of the outer layer to the hard coating while maintaining the benefits of both. The outer coating layer 58 is preferably produced from a chromium-containing material, e.g., chromium or chromium alloys, or chromium compounds that are compatible with polytetrafluoro ethylene, e.g., CrPt. A specific outer coating layer is produced from chromium with a thickness of about 100-200 angstroms. The outer skin layer can have a thickness of from about 50 angstroms to about 500 angstroms, preferably from about 100 angstroms to about 300 angstroms. The razor or shaving blade 10 has a cutting edge that undergoes less rounding with repeated shaves than it normally would without the outer coating layer.
    [0043] The outer layer 52 is generally used to provide reduced friction. The outer layer 52 can be a polymer composition or a modified polymer composition. The polymer composition can be polyfluorocarbon. A suitable polyfluorocarbon is polytetrafluoro ethylene, sometimes called a telomer. One particular polytetrafluoro ethylene material is Krytox LW 2120, available from DuPont. This material is a stable, non-flammable dry lubricant consisting of small particles that produce stable dispersions. The material is supplied in the form of an aqueous dispersion of 20% solids by weight and can be applied by dipping, spraying or brushing, and can then be air dried or melt coated. Preferably, the layer is less than 5,000 angstroms and can typically be 1,500 angstroms to 4,000 angstroms, and can be as thin as 100 angstroms, as long as a continuous coating is maintained. As long as a continuous coating is achieved, a reduction in the thickness of the telomere coating can provide improved first shave or waxing results. U.S. Patent Nos. 5,263,256 and 5,985,459, which are incorporated herein by reference, describe techniques that can be used to reduce the thickness of an applied telomere layer.
    [0044] The razor blade 50 is generally made according to the processes described in the aforementioned patents. One particular embodiment includes a niobium intermediate layer 54, a DLC hard coating layer 56, a chromium outer coating layer 58, and an outer coating layer of polytetrafluoro ethylene Krytox LW2120 52. The outer coating layer of chromium 58 is deposited with a minimum of 100 angstroms and a maximum of 500 angstroms. The razor blade 50 preferably has a tip radius of about 200-400 angstroms, measured by scanning electron microscopy, or SEM, after application of the outer coating layer 58 and before the addition of the outer layer. 52.
    [0045] Another embodiment shown in Figure 5 shows a finished blade 60 of the present invention having a substrate (for example, substrate 11 of Figure 1, shown, or substrate 31 of Figure 3) that has an intermediate layer 62, preferably in chrome , a hard coating layer, which may or may not include dopants, and an outer coating layer of polytetrafluoroethylene 66 (eg Krytox LW2120). Hard coatings such as aluminum magnesium boride based coatings are described in US Patent Publication No. 2013/0031794, assigned to the assignee of the present invention and incorporated herein by reference. In Figure 5, the outer layer 66, which generally comprises the same type of material as the outer layer 52, described above in Figure 4, is deposited directly onto the hard coating layer 64, as there is no layer. of external coating present in this modality.
    [0046] The razor blade substrate profile of the present invention provides an improvement in blade sharpening. Blade sharpness can be quantified by measuring the cutting force, which is correlated with sharpness. Cutting force can be measured by a Single Fiber Cut test, which measures blade cutting forces by measuring the force required for each blade to cut a single hair. The cutting force of each blade is determined by measuring the force required for each blade to cut a single human hair. Each blade cuts the wire more than 50 times and the force of each cut is measured on a recorder. A blade control population is often used with intermittent cuts to determine a more reliable cutting force comparison. The hair being cut is fully hydrated. The cutting speed is 50 millimeters per second. The displacement of the blade tip from the "skin plane" is 100 micrometers. The angle of the blade relative to the "plane of the skin" is generally about 21.5 degrees. The orientation of the hairs in relation to the "skin plane" is 90 degrees. The data capture rate is 180 kHz. This type of shear force testing process is described in US Patent Publication No. 20110214493, assigned to the assignee of the present invention, and incorporated herein by reference.
    [0047] The finished or coated blades of the present invention (for example, blades 50 or 60) have a cutting force of less than about 40 millinewtons, and preferably less than about 35 millinewtons, for a pile with a diameter of 100 microns. This is considered in the present invention to be a relatively sharp blade.
    [0048] Figure 6 shows an alternative embodiment of the present invention having a blade substrate 71, facets 72 and 74, with the geometries described above in conjunction with Figures 1 to 3, and a nitride region 76 at or below the surface of the substrate that is formed as a result of a step in the nitriding process. The nitriding process step may comprise plasma nitriding to form the nitride region 76. The nitrite region provides reinforcement to the substrate near the edge and this extra intensity is particularly useful with the blade profile of the present invention. If desired, one or more layers 78 can be joined to the nitride substrate 71. A layer 78 is shown in Figure 6. Layer 78 can comprise a polymer much like outer layer 52 or outer layer 66 described above. One type of nitriding process is described in US Patent Publication No. 2010/0299931 A1 assigned to the assignee of the present invention and incorporated herein by reference.
    [0049] The dimensions and values disclosed in the present invention are not to be understood as being strictly limited to the exact numerical values mentioned. Instead, except where otherwise noted, each of these dimensions is intended to mean both the stated value and a functionally equivalent range around that value. For example, a dimension revealed as "40 micrometers" is meant to mean "about 40 micrometers".
    [0050] All documents cited in the detailed description of the invention are, in their relevant part, incorporated herein by reference; Citation of any document is not to be construed as an admission that it represents prior art in relation to the present invention. To the extent that any meaning or definition of a term herein conflicts with any meaning or definition of the same term in a document incorporated by reference, the assigned meaning or definition ascribed to the term in this document shall take precedence.
    [0051] Although specific embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that fall within the scope of the present invention.
    权利要求:
    Claims (15)
    [0001]
    1. A razor blade (10) comprising: a substrate (11) with a cutting edge being defined by a sharp tip (12) having a thickness between 1.60 and 1.75 micrometers measured at a distance of four micrometers of the blade tip (12), and characterized by the fact that said substrate (11) has a thickness between 9.25 and 10.00 micrometers measured at a distance of forty micrometers from the blade tip (12).
    [0002]
    2. Shaving or shaving blade (10), according to claim 1, characterized in that it additionally comprises a ratio between the thickness measured at four micrometers and the thickness measured at forty micrometers between 0.165 and 0.185.
    [0003]
    3. Razor blade (10), according to claim 1, characterized in that said substrate (11) has a thickness between 2.70 and 3.00 micrometers measured at a distance of eight micrometers from of the blade tip (12), a thickness between 4.44 and 5.00 micrometers measured at a distance of sixteen micrometers from the blade tip (12), a ratio between the thickness measured at four micrometers and the thickness measured at eight micrometers between 0.56 and 0.62, and a ratio of the thickness measured at four micrometers to the thickness measured at sixteen micrometers between 0.32 and 0.40.
    [0004]
    4. Razor or shaving blade (10), according to claim 1, characterized in that a cross-sectional shape of the blade is defined by the equation w=adn, where "a" is in the range of 0.50 to 0.62 and "n" is in the range of 0.76 to 0.80.
    [0005]
    5. Razor blade (10), according to claim 1, characterized in that the substrate (11) comprises a martensitic stainless steel of 0.35% to 0.6% C and 13% to 14 % of Cr.
    [0006]
    6. A razor or depilatory blade (10), according to claim 5, characterized in that said substrate additionally comprises from 1.1% to 1.5% of Mo.
    [0007]
    7. A razor blade (10) according to claim 1, characterized in that the substrate is a martensitic stainless steel with a carbide density of at least 200 carbides or more per 100 square micrometers as determined by section optical microscopic cross section.
    [0008]
    8. Razor or shaving blade (10), according to claim 1, characterized in that the substrate (11) has a tip radius of 125 to 500 angstroms.
    [0009]
    9. A razor blade (10) according to claim 8, characterized in that it additionally comprises one or more intermediate layers (54), one or more coating layers (56), one or more coating layers outer (58), or one or more outer layers (52).
    [0010]
    10. A razor blade (10), according to claim 9, characterized in that said intermediate layer (54) comprises niobium, chromium, platinum, titanium, or any combination or alloys thereof, through said layer of coating (56) comprises carbon or aluminum magnesium boride, by said outer coating layer (58) comprises chromium, and by said outer layer (52) comprises a polymer.
    [0011]
    11. Razor or shaving blade (10), according to any of the preceding claims, characterized in that it additionally comprises an included angle of less than 7 degrees.
    [0012]
    12. Razor or shaving blade (10), according to claim 11, characterized in that said included angle is measured at a distance of forty micrometers or greater from the tip of the blade (12).
    [0013]
    13. Razor or shaving blade (10), according to any of the preceding claims, characterized in that said substrate (11) has only two facets on each side of said cutting edge.
    [0014]
    14. Razor or shaving blade (10), according to any of the preceding claims, characterized in that it additionally comprises a nitride region disposed on or under a surface of the substrate (11).
    [0015]
    15. Razor blade or wax (10), according to claim 14, characterized in that said nitride is formed by plasma nitriding.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112016027044B1|2021-07-20|SHAVE OR HAIR BLADES
    BR112014000202B1|2021-01-19|razor blades that have a large nose radius
    BRPI0915922B1|2020-02-11|SHAVING OR STRAINING BLADES
    US9248579B2|2016-02-02|Razors and razor cartridges
    BR112014000424B1|2021-01-05|razors or shaves
    BR112018009651B1|2022-01-11|razor for shaving or epilation
    同族专利:
    公开号 | 公开日
    CA2948835C|2019-04-02|
    WO2015179217A1|2015-11-26|
    EP3145683A1|2017-03-29|
    US20170341250A1|2017-11-30|
    AU2015264509A1|2016-11-24|
    RU2016147040A3|2018-06-20|
    CN106457587B|2019-07-26|
    CA2948835A1|2015-11-26|
    US9751230B2|2017-09-05|
    RU2662177C2|2018-07-24|
    JP6487532B2|2019-03-20|
    JP2017514667A|2017-06-08|
    US20150328789A1|2015-11-19|
    AU2015264509B2|2018-03-01|
    RU2016147040A|2018-06-20|
    EP3145683B1|2019-09-18|
    MX2016015164A|2017-03-07|
    CN106457587A|2017-02-22|
    SG11201609283QA|2016-12-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3543402A|1968-04-15|1970-12-01|Coors Porcelain Co|Ceramic cutting blade|
    US3761372A|1971-07-09|1973-09-25|Gillette Co|Method for producing an improved cutting tool|
    GB1465697A|1973-06-20|1977-02-23|Wilkinson Sword Ltd|Razor blades|
    BR8307616A|1982-11-19|1984-10-02|Gillette Co|SHAVING BLADES|
    EP0126128B1|1982-11-19|1987-06-24|The Gillette Company|Razor blades|
    US4933058A|1986-01-23|1990-06-12|The Gillette Company|Formation of hard coatings on cutting edges|
    GB8821944D0|1988-09-19|1988-10-19|Gillette Co|Method & apparatus for forming surface of workpiece|
    US5232568A|1991-06-24|1993-08-03|The Gillette Company|Razor technology|
    ZA928617B|1991-11-15|1993-05-11|Gillette Co|Shaving system.|
    US5669144A|1991-11-15|1997-09-23|The Gillette Company|Razor blade technology|
    US5263256A|1992-04-17|1993-11-23|The Gillette Company|Method of treating razor blade cutting edges|
    US5985459A|1996-10-31|1999-11-16|The Gillette Company|Method of treating razor blade cutting edges|
    US6684513B1|2000-02-29|2004-02-03|The Gillette Company|Razor blade technology|
    WO2003006218A1|2001-07-11|2003-01-23|Koninklijke Philips Electronics N.V.|Cutting member with dual profile tip|
    US6701627B2|2001-07-26|2004-03-09|American Saw & Mfg. Company, Inc.|Composite utility knife blade|
    GB0207375D0|2002-03-28|2002-05-08|Hardide Ltd|Cutting tool with hard coating|
    KR100668354B1|2006-02-07|2007-01-12|삼성에스디아이 주식회사|Method for preparing metal catalyst and electrode including the same|
    JP5210627B2|2007-12-27|2013-06-12|永田精機株式会社|Blade member and processing device for blade edge of blade member|
    US9079321B2|2008-07-16|2015-07-14|The Gillette Company|Razor blades|
    US9248579B2|2008-07-16|2016-02-02|The Gillette Company|Razors and razor cartridges|
    US9598761B2|2009-05-26|2017-03-21|The Gillette Company|Strengthened razor blade|
    US9255858B2|2010-03-03|2016-02-09|The Gillette Company|Method for measuring fiber cutting force|
    US8769833B2|2010-09-10|2014-07-08|Stanley Black & Decker, Inc.|Utility knife blade|
    US20130014396A1|2011-07-14|2013-01-17|Kenneth James Skrobis|Razor blades having a wide facet angle|
    US20130014395A1|2011-07-14|2013-01-17|Ashok Bakul Patel|Razor blades having a large tip radius|
    US20130031794A1|2011-08-05|2013-02-07|Duff Jr Ronald Richard|RAZOR BLADES WITH ALUMINUM MAGNESIUM BORIDE -BASED COATINGS|
    JP5924094B2|2012-04-18|2016-05-25|新明和工業株式会社|CUTTER, MANUFACTURING METHOD THEREOF, AND PLASMA DEVICE FOR MANUFACTURING THE SAME|
    US20140026424A1|2012-07-24|2014-01-30|The Gillette Company|Razor cartridge|
    US9751230B2|2014-05-19|2017-09-05|The Gillette Company|Razor blades|
    US11230025B2|2015-11-13|2022-01-25|The Gillette Company Llc|Razor blade|US20130014396A1|2011-07-14|2013-01-17|Kenneth James Skrobis|Razor blades having a wide facet angle|
    US9751230B2|2014-05-19|2017-09-05|The Gillette Company|Razor blades|
    BR112017010922B1|2014-12-22|2021-07-06|Bic-Violex Sa|BLADE FOR SHAVING AND DEHAIRING|
    US11230025B2|2015-11-13|2022-01-25|The Gillette Company Llc|Razor blade|
    US20180029241A1|2016-07-29|2018-02-01|Liquidmetal Coatings, Llc|Method of forming cutting tools with amorphous alloys on an edge thereof|
    US20180043561A1|2016-08-15|2018-02-15|The Gillette Company Llc|Razor blades|
    EP3372362A1|2017-03-08|2018-09-12|BIC-Violex S.A.|Razor blade|
    EP3372361A1|2017-03-08|2018-09-12|BIC-Violex S.A.|Razor blade|
    CN110366605A|2017-04-04|2019-10-22|比克维奥莱克斯公司|Coating slasher including graphene|
    KR20210039205A|2019-10-01|2021-04-09|주식회사 도루코|Shaving Blade|
    KR20210155639A|2020-06-16|2021-12-23|주식회사 도루코|Shaving Blade|
    法律状态:
    2020-01-21| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-01-26| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2021-05-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-20| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 15/05/2015, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US14/281,153|2014-05-19|
    US14/281,153|US9751230B2|2014-05-19|2014-05-19|Razor blades|
    PCT/US2015/030936|WO2015179217A1|2014-05-19|2015-05-15|Razor blades|
    [返回顶部]