• 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:
    The invention relates to a tool for forming a glass plate comprising: a. a forming die made of an electrically conductive material comprising: ai. a molding surface; aii. means adapted to maintain a glass plate spaced from and away from the molding surface; aiii. an induction circuit comprising an inductor extending into a cavity in said forming die; b. a heating block remote from the forming die and comprising: bi. a surface capable of producing thermal radiation vis-à-vis the molding surface; bii. an induction circuit comprising an inductor extending into a cavity of said heating block c. means for connecting the induction circuits to a high frequency current generator.
    公开号:FR3034093A1
    申请号:FR1552470
    申请日:2015-03-24
    公开日:2016-09-30
    发明作者:Jose Feigenblum
    申请人:RocTool SA；
    IPC主号:
    专利说明:

    [0001] The invention relates to a device and a method for thermoforming glass. The invention is more particularly, but not exclusively, dedicated to the forming of a glass plate for producing a display screen. Throughout the text, the terms "forming" or "thermoforming" applied to glass refer to a process of marrying a shape to a glass plate of another shape, initially in a solid state, without long-range movement of sections of said plate. Thus, the method which is the subject of the invention does not concern, for example, the forming of a parison into an object, by blowing or centrifugation, processes which involve a long-distance displacement of the sections of the initial object. The method of thermoforming glass is known from the prior art and consists of carrying a glass plate to be formed at a temperature sufficient to give it formability, that is to say a temperature greater than the transition temperature vitreous but lower than the melting temperature of the glass, and which makes it possible to attain a viscosity of 10 11 and 10 poise (10 10 to 10 6 Pa). Thus heated at a temperature generally between 700 ° C. and 800 ° C., the plate is forced into the form of a tool, generally a matrix, by the effect of gravity, by the effect of a pressure, by the effect of a counter-tooling, for example a punch, or by any combination of these means. Then the formed plate is cooled according to a controlled cooling process both in terms of cooling rate and in terms of spatial uniformity of this cooling, in order, according to the applications, to obtain the state of internal stress referred to in FIG. article thus formed. US 2010 000259 discloses a forming method of placing a flat glass plate at a temperature below its softening temperature on a preheated tool. The tooling and the plate are then heated in an oven, in particular by infrared radiation. The glass plate is forced to conform to the shape of the tool when its temperature is such that its viscosity is of the order of 109 poise (108 Pa. $). Then, the assembly is removed from the oven and cooled the plate still in the mold, either by natural cooling, or by forced convection by blowing air or a gas on the mold. According to this method of the prior art, the tool is exposed for a long time at high temperature. This exposure of the tooling at high temperature degrades the tooling, in particular by oxidation or by chemical interaction with the formed glass, and more particularly by the forming surface of the tooling on which the glass plate comes into contact during the process. forming operation. Degradations, even minor, of this surface are printed in the glass causing unacceptable surface defects. The use of a refractory high temperature corrosion resistant material, such as a nickel base superalloy, makes it difficult to heat the matrix by radiation. To avoid these undesirable effects, the solutions of the prior art consist in forming the glass at a lower temperature, so that, on the one hand, the tool is less exposed to thermochemical degradation phenomena and, on the other hand, that the glass surface is sufficiently hard not to reproduce the surface defects. However, this solution requires greater forming efforts and the use of an effector or the application of a gas pressure, which complicates the tool and makes it more expensive. WO 2012 118612 discloses a method of thermoforming a glass plate by placing said glass plate on a tool made of a glass-inert material resistant to high temperature, such as graphite . The glass plate and the tooling are placed under a vacuum bell comprising infrared heating means which radiatively heat the glass plate and the tooling. This heating is carried out under an inert atmosphere to prevent the oxidation of graphite. The forming is performed by conjunction of the vacuum, under the glass plate, and the application of a hot gas pressure on the other side. These devices of the prior art involve long cycle times, and delicate control of thermal cycles both heating and cooling. In addition, these methods of the prior art implement specific enclosures or installations which constitute points of concentration of production, and critical means vis-à-vis productivity. The invention aims to solve the disadvantages of the prior art and concerns for this purpose a tool for forming a glass plate comprising: a. a forming die made of a high temperature resistant metal material and comprising: a. a molding surface aii. means adapted to maintain a remote glass plate 3034093 3 of the molding surface and vis-à-vis thereof; aiii. an induction circuit comprising an inductor extending into a cavity in the forming die b. a heating block remote from the forming die and comprising: bi. a surface capable of producing thermal radiation vis-à-vis the molding surface; bii. an induction circuit comprising an inductor extending into a cavity of said heating block c. means for connecting the two induction circuits to a high frequency current generator. Thus, the induction heating of the heating block and the tooling makes it possible to bring these rapidly to the temperature necessary to achieve the forming of the glass and thus to avoid a long stay at high temperature of the tooling. Direct heating of the heating block and the matrix makes it possible to control the temperature. The use of a metal material for the matrix makes it possible, by machining, to obtain a surface state adapted to the molding surface. Heating the entire heating block and matrix provides a uniform temperature distribution over the entire surface of the formed glass plate. The tool is able to function as a stand-alone tool and requires only a connection to a high-frequency current generator. The invention is advantageously implemented according to the embodiments described below, which are to be considered individually or in any technically operative combination. According to one embodiment, the matrix is made of a martensitic stainless steel. This type of steel is ferromagnetic up to a temperature of about 700 ° C. The high magnetic permeability in the ferromagnetic state makes it possible to quickly heat the cavity edges in which the inductors extend by concentrating the field lines. The transmission by conduction of heat to the molding surface makes it possible to standardize the temperature on the surface thereof.
    [0002] According to another embodiment, the matrix consists of an alloy based on Nickel (Ni) of Iron (Fe) of Chromium (Cr) and Niobium (Nb). This type of nickel-based superalloy is able to resist creep and corrosion during prolonged exposure to a temperature of 700 ° C., or even higher in the case of short-term exposure. This material is electrically conductive and is capable of being heated by induction. According to a variant of this embodiment, the cavity in which the inductor extends comprises a layer made of a ferromagnetic material between the inductor and the walls of said cavity. The nickel-based alloy being of low magnetic permeability, this embodiment makes it possible to concentrate the heating on the edges of the cavity and then to transfer the heat by conduction to the molding surface and thus to obtain a better efficiency of the induction heating.
    [0003] Advantageously, the heating block is made of graphite. Graphite has a high emissivity coefficient in the thermal infrared range, is able to be heated by induction to very high temperatures and is easy to machine. This technical solution allows a fast and uniform heating of the glass plate by radiation.
    [0004] Advantageously, the graphite heater has an oxidation-resistant coating at 1200 ° C and a high emissivity at wavelengths between 3 μm and 50 μm. This embodiment makes it possible to protect the heating block from oxidation and thus allows autonomous operation, outside the enclosure, of the tooling that is the subject of the invention.
    [0005] According to a particular embodiment, the tool object of the invention comprises a confinement enclosure surrounding the matrix and the heating block, said enclosure being filled with a neutral gas, in particular an inert gas. Thus, the heating block and the matrix are protected from oxidation and their longevity is increased. In the context of the invention, a neutral gas is a gas whose composition is without detrimental effect in a certain context Advantageously, the matrix comprises a thermally insulating support able to move the glass plate away from the contact with the matrix. Thus, the glass plate is protected from any thermal shock in contact with the matrix before said glass plate has reached its forming temperature.
    [0006] Advantageously, the tool object of the invention comprises: d. A pyrometric sensor for measuring the temperature of the heating block Advantageously, the tool object of the invention also comprises: 3034093 5 e. a thermocouple integrated in the matrix and close to the molding surface for measuring the temperature of said molding surface. These measuring devices make it possible to control and regulate finely the thermal cycle of the thermoforming of the glass plate.
    [0007] Advantageously, the matrix of the tool object of the invention comprises: aiv. a cooling duct for the circulation of a gas. Advantageously, the heating block of the tool object of the invention comprises: biii. a cooling duct for the circulation of a gas. These means participate in the regulation of the thermoforming thermal cycle and make it easier to handle the tooling, particularly the matrix, during the loading of the glass plate and the unloading of the plate formed after the forming cycle. The invention also relates to a method for thermoforming a glass plate employing tooling according to any one of the preceding embodiments, which method comprises the steps of: i. position the glass plate on the matrix; ii. simultaneously heating the matrix and the heating block, by the circulation of a high frequency electric current in their respective induction circuit. Iii. forming the glass plate to the shape of the molding surface of the matrix iv. temperature-controlled cooling the matrix to the lower annealing temperature; there. cool the matrix vi. remove the formed glass plate.
    [0008] Thus, the method which is the subject of the invention allows a rigorous control of the thermal forming cycle. Advantageously, step ii) of the method that is the subject of the invention comprises heating the heating block to a so-called softening temperature of the glass constituting the glass plate and heating the matrix to a temperature equal to 30.degree. higher annealing temperature. Thus, the behavior of the glass plate is sufficiently plastic to perform gravity forming. The invention is described below according to its preferred embodiments, which are in no way limitative, and with reference to FIGS. 1 to 3, in which: FIG. 1 shows, in a sectional view, an embodiment of the object tooling of the invention, before forming, a glass plate to be formed being positioned on the tooling; FIG. 2 is a detail view, in the same section as FIG. 1, showing an exemplary embodiment of an induction circuit in the matrix of the tool object of the invention; and FIG. 3 illustrates by a flowchart the method which is the subject of the invention. Throughout the text, in the absence of additional precision: the softening temperature of the glass corresponds to a temperature at which the viscosity of the formed glass is 107 poise (106 Pa. $); the upper annealing temperature corresponds to a temperature at which the viscosity of the formed glass is 1013 poise (1012 Pa. $); and the lower annealing temperature corresponds to a temperature at which the viscosity of the formed glass is 1014 poises (1014 Pa.%). Figure 1, according to an exemplary embodiment, the tool object of the invention comprises a heating block (110) and a forming die (120) comprising a surface (125) molding. According to this embodiment, the molding surface (125) is a recessed impression. Alternatively the molding surface is a raised surface.
    [0009] The tooling that is the subject of the invention is here represented at the beginning of the forming operation, the plate (100) of initially flat glass according to this example of implementation being positioned above the cavity (125). and resting at its ends on thermally insulating shims (130). By way of nonlimiting example, said shims (130) are made of ceramic, or of a composite material comprising 90% (or more) of mica (muscovite) in a silicone matrix. According to an exemplary embodiment, the matrix (120) consists of a nickel-based structural hardening superalloy known under the trade name INCONEL 718®, and comprising 17 to 21% chromium (Cr), 2.8 at 3.3% molybdenum (Mo), 4.75-5.5% niobium (Nb), 17-19% iron (Fe) and 50-55% nickel (Ni). Alternatively, the matrix consists of ferritic-martensitic stainless steel type AISI 431 and comprising 0.16% carbon (C), 2% nickel (Ni) and 17% chromium (Cr). These materials have mechanical properties including resistance to wear and creep as well as resistance to corrosion at high temperatures, up to 400 ° C for stainless steel and up to 700 ° C for INCONEL 718 ®, and more for short term exposures. The matrix comprises a plurality of conduits (140) in which inductors producing an induction circuit are placed. Said inductors are, by way of example, constituted by a copper tube (141) isolated from the walls of the matrix by a ceramic tube (142), for example a silica sheath. Advantageously, the die (120) is made in two parts (121, 122), thus, the ducts (140) for the passage of the inductors are made by grooving said parts before assembly. 2, according to another embodiment of the induction circuit, more particularly adapted to the case where the material constituting the matrix is not ferromagnetic, the ducts are lined with a layer (243) of steel of high magnetic permeability and retaining its ferromagnetic properties up to high temperature, for example 700 ° C. Thus, the magnetic field produced by the inductor (241) is concentrated in the liner (243) which rises rapidly in temperature and transmits this temperature by conduction to the matrix. Since the heat is transmitted by conduction to the molding surface, the judicious arrangement of the inductors makes it possible to ensure a uniform temperature on this molding surface. Returning to FIG. 1, according to this exemplary embodiment, a network of cooling ducts (152) is formed in the matrix (120), by drilling or by grooving and assembly, as for the ducts receiving the inductors. These ducts make it possible to blow air or another heat-transfer gas to cool the matrix and more particularly the molding surface. Air blowing and induction heating can be used together for purposes of temperature control or cooling rate. A thermocouple (162) is preferably located near the molding surface (125) to measure its temperature and to control the heating and cooling conditions. The matrix is placed on a heat-insulating support (180), for example a zirconia-based composite plate or a plate made of a composite material comprising mica (muscovite) with a silicone binder. According to an exemplary embodiment, said support (180) is mounted on means (not shown) for moving the matrix in translation (181) relative to the heating block (110) in order to facilitate the loading and unloading operations of the glass plate in the tooling.
    [0010] The heating block (110) is made of graphite. It is kept at a distance from the matrix by means (not shown) making it possible to adjust the distance between the emitting surface (115), opposite the molding surface (125) of the matrix, and the plate (100) ) of glass, typically in a range of 5 mm and 50 mm.
    [0011] Like the die (120), said heating block (110) comprises, according to this exemplary embodiment, a duct network (145) for the passage of an induction heating circuit and a duct network (151) cooling by circulation of a coolant gas. According to an exemplary embodiment, the heating block comprises on all or part of its faces, a coating (131) capable of protecting the graphite from oxidation at high temperature and high emissivity in the band of thermal infrared radiation, by for example, a coating of silicon carbide (SiC). Such a coating makes it possible to protect the graphite from oxidation up to a temperature of the order of 1600 ° C. Thus, the tooling that is the subject of the invention is able to operate in air without degradation. Alternatively, to ensure a longer life of the tool 15 object of the invention, it is placed in an enclosure, which enclosure is filled with a neutral gas at the operating temperature, such as the argon or nitrogen, or an inert gas such as helium. The temperature of the heating block is measured, according to this exemplary embodiment, by an infrared pyrometer (161). The induction circuits of the heating block (110) and the matrix (120) of the tooling 20 which is the subject of the invention are connected to a high-frequency current generator, typically a frequency of between 10 kHz and 200 kHz. means (not shown) capable of tuning the resulting resonant circuit, including a capacitance box and an impedance matching coil. Figure 3, according to an exemplary embodiment of the method of the invention, it comprises a first step (310) loading of placing the glass plate to be formed on the tool. According to a particular embodiment, this step (310) is performed while the matrix is removed from the heating block. According to alternative embodiments, said glass plate is placed at ambient temperature on a matrix at room temperature or on a matrix at a temperature less than or equal to the lower annealing temperature of the glass. According to another variant, in an in-line process, the glass plate is placed on the matrix at a temperature less than or equal to the lower annealing temperature of the glass, ie a temperature below 3034093 9600 ° C. The glass plate rests on the insulating shims just above the molding surface, without touching it. According to a heating step (320), the matrix carrying the glass plate being under the heating block, said heating block and the matrix are heated by induction. The heating block is brought to a temperature at least equal to the softening temperature of the glass, ie 800 ° C. to 850 ° C., depending on the nature of the glass, or at a higher temperature, usually between 1200 ° C. and 1600 ° C. C in the case of a graphite block, so as to increase the power of radiation. The matrix is heated to a lower temperature, typically at the upper annealing temperature of the glass, ie between 600 ° C and 700 ° C depending on the nature of the thermoformed glass object. The glass plate is heated by radiation from the heating block. During a forming step (330), by softening under the effect of temperature, the glass plate flows on the molding surface of the matrix whose shape it conforms. It cools in contact with the matrix, but the temperature remains sufficient to ensure stress relaxation in the glass plate. During a cooling step (340), according to an example embodiment, heating of the heating block is stopped and said block is cooled by circulation of gas in the cooling ducts. The cooling of the glass plate is regulated by the matrix. Thus, the cooling step (340) comprises a slow and controlled cooling down to the lower annealing temperature of the glass forming the plate, typically between 500 ° C and 600 ° C depending on the nature of the glass, and then the cooling is accelerated to the unloading temperature. When the unloading temperature is reached, during an unloading step (350), the die is, according to an exemplary embodiment, moved to the unloading position and the formed glass plate is removed from the die by appropriate means. for example a suction device. The tool is then ready for a new cycle. The above description and the exemplary embodiments show that the invention achieves the desired objectives, in particular it makes it possible to reduce the residence time at high temperature of the tooling while ensuring precise control of the thermal cycling of thermoforming. The tooling that is the subject of the invention is capable, according to a particular embodiment, of operating autonomously without a specific enclosure.
    权利要求:
    Claims (14)
    [0001]
    REVENDICATIONS1. Tooling for forming a glass plate (100) comprising: a. a forming die (120) made of an electrically conductive material comprising: ai. a molding surface (125); aii. means (130) adapted to maintain a glass plate remote from and adjacent the molding surface; aiii. an induction circuit comprising an inductor (141, 241) extending into a cavity (140) in said forming die; b. a heating block (110) remote from the forming die and comprising: bi. a surface (115) capable of producing thermal radiation vis-à-vis the molding surface (125); bii. an induction circuit comprising an inductor extending into a cavity (145) of said heating block c. means for connecting the induction circuits to a high frequency current generator.
    [0002]
    2. Tooling according to claim 1, wherein the matrix (120) consists of a martensitic stainless steel.
    [0003]
    3. Tooling according to claim 1, wherein the matrix (120) consists of an alloy based on nickel (Ni) iron (Fe) chromium (Cr) and Niobium (Nb)
    [0004]
    4. Tooling according to claim 3, wherein the cavity (140, 145) in which the inductor extends comprises a layer (243) made of a ferromagnetic material between the inductor and the walls of said cavity.
    [0005]
    5. Tooling according to claim 1, wherein the block (110) of heating consists of graphite. 3034093 11
    [0006]
    6. Tooling according to claim 5, wherein the block (110) for heating comprises a coating (131) resistant to oxidation at 1200 ° C and high emissivity in wavelengths between 3 pm and 50 pm 5
    [0007]
    7. Tooling according to claim 5, comprising a confinement enclosure surrounding the matrix (120) and the block (110) for heating, said enclosure being filled with a neutral gas, in particular an inert gas.
    [0008]
    8. Tooling according to claim 1, wherein the die (120) comprises a thermally insulating support (130) able to move the glass plate (100) away from the contact with the die.
    [0009]
    9. Tooling according to claim 1, comprising: d. a pyrometric sensor (161) for measuring the temperature of the heating block
    [0010]
    10. Tooling according to claim 1, comprising: 15 e. a thermocouple (162) integrated in the die and close to the molding surface (125) for measuring the temperature of said molding surface.
    [0011]
    The tool of claim 1, wherein the matrix comprises: aiv. a cooling duct (152) for the circulation of a gas. 20
    [0012]
    The tool of claim 1, wherein the heating block comprises: biii. a cooling duct (151) for the circulation of a gas.
    [0013]
    13. A method for thermoforming a glass plate employing a tool according to claim 1, comprising the steps of: i. positioning (310) the glass plate on the die; ii. heating (320) simultaneously the matrix and the heating block by the circulation of a high frequency electric current in their respective induction circuit. 3034093 12 iii. forming (330) the glass plate into the shape of the molding surface of the matrix iv. cooling (340) at a controlled rate the die to the lower annealing temperature; 5 y. cool the matrix vi. removing (350) the formed glass plate.
    [0014]
    14. The method of claim 13, wherein step ii) (320) comprises heating the heating block to a so-called softening temperature of the glass constituting the glass plate and heating the matrix to a temperature equal to the upper annealing temperature.
    类似技术:
    公开号 | 公开日 | 专利标题
    CA2875233C|2020-03-24|Method and device for preheating a mold particularly intended for injection molding
    WO2016151127A1|2016-09-29|Device and method for forming glass
    JP5226206B2|2013-07-03|Heat treatment method and heat treatment apparatus using induction heating
    FR2876930A1|2006-04-28|METHOD FOR HEATING FORGING MACHINES, FORGING TOOLS AND REMOVABLE OVEN ELEMENT FOR HEATING SUCH TOOLS
    EP0624051A1|1994-11-09|Microwave oven in particular for rapid heating at high temperatures
    EP3455044B1|2020-10-07|Device and method for moulding and consolidating a textile preform
    WO2018002001A1|2018-01-04|A method and apparatus for 3d printing of quartz glass
    EP3281769B1|2019-08-28|Moulding device for carrying out hot moulding and cold moulding methods
    JP6697847B2|2020-05-27|Thermal insulation structure
    EP3455045B1|2021-05-05|Method and device for heating a mould
    Tsoutsouva et al.2015|Undercooling measurement and nucleation study of silicon droplet solidification
    JPH11204239A|1999-07-30|Plate type heater, its manufacture and thin film manufacturing device
    Khlevnoy et al.2008|Investigation of furnace uniformity and its effect on high-temperature fixed-point performance
    KR101661035B1|2016-09-28|Forming mold for glass
    TWI744228B|2021-11-01|Glass forming device and method
    Colasuonno2017|Method for creating functionally graded materials with spark plasma sintering and a continuous machine for future scalability
    CN106348287A|2017-01-25|Graphite plate and the manufacturing method thereof
    TW201733933A|2017-10-01|Glass forming device and method
    EP3194143A1|2017-07-26|Method for hot-forming a thermoplastic material and implementation facility
    TWI580919B|2017-05-01|Composite structures of multi-crucibles and their high-temperature adiabatic heating method in vacuum arc melting process
    Nagai et al.2007|Thermal Conductivity Measurement of Molten Indium Antimonide Using Hot-Disk Method in Short-Duration Microgravity
    US20170341139A1|2017-11-30|Unit Cell Titanium Casting
    US20180169749A1|2018-06-21|Unit Cell Titanium Casting
    US20170333985A1|2017-11-23|Unit Cell Titanium Casting
    US20170326631A1|2017-11-16|Unit Cell Titanium Casting
    同族专利:
    公开号 | 公开日
    WO2016151127A1|2016-09-29|
    CN107592856A|2018-01-16|
    JP2018509374A|2018-04-05|
    CN107592856B|2021-02-09|
    JP6686128B2|2020-04-22|
    KR20170129819A|2017-11-27|
    US20180057389A1|2018-03-01|
    FR3034093B1|2021-01-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS62202828A|1986-02-26|1987-09-07|Nippon Sheet Glass Co Ltd|Molding of glassware|
    JPH10218630A|1997-02-04|1998-08-18|A F C Ceramic:Kk|Mirror finished surface forming mold|
    US20070267405A1|2004-03-18|2007-11-22|Feigen-Blum Jose|Method Of Heating Materials In Order To Produce Objects And Device For Implementing Said Method|
    US20130125888A1|2010-08-02|2013-05-23|Tecno Sun S.R.L.|Device for supplying micronized medical salt|
    US20120297828A1|2011-05-27|2012-11-29|Darrel P Bailey|Glass molding system and related apparatus and method|
    FR2991902A1|2012-06-18|2013-12-20|Roctool|METHOD AND DEVICE FOR PREHEATING A MOLD IN PARTICULAR INJECTION MOLDING|
    WO2013190020A1|2012-06-19|2013-12-27|Roctool|Quick heating and cooling mould|
    US20140157828A1|2012-12-10|2014-06-12|Corning Incorporated|Method and system for making a glass article with uniform mold temperature|
    WO2015022643A1|2013-08-12|2015-02-19|Istituto Nazionale Di Astrofisica|A process for manufacturing an optical element by hot forming a glass sheet using pressure difference|WO2019020583A1|2017-07-25|2019-01-31|Roctool|Method and device for the manufacture of a composite component of complex shape|GB9210327D0|1992-05-14|1992-07-01|Tsl Group Plc|Heat treatment facility for synthetic vitreous silica bodies|
    US9010153B2|2008-07-02|2015-04-21|Corning Incorporated|Method of making shaped glass articles|
    CN202099183U|2011-01-12|2012-01-04|可成科技股份有限公司|Manufacture device of three-dimensional glass shell and electronic products with same|
    TWI643983B|2013-03-14|2018-12-11|美商希利柯爾材料股份有限公司|Directional solidification system and method|
    US9505648B2|2014-05-19|2016-11-29|Corning Incorporated|Mold assemblies for forming shaped glass articles|FR3051136A1|2016-05-10|2017-11-17|Roctool|METHOD AND DEVICE FOR HEATING A MOLD|
    KR102085022B1|2018-10-24|2020-03-05|애드파인테크놀러지|System and method for manufacturing 3D curved glass|
    法律状态:
    2016-03-31| PLFP| Fee payment|Year of fee payment: 2 |
    2016-09-30| PLSC| Search report ready|Effective date: 20160930 |
    2017-03-31| PLFP| Fee payment|Year of fee payment: 3 |
    2018-03-30| PLFP| Fee payment|Year of fee payment: 4 |
    2019-04-01| PLFP| Fee payment|Year of fee payment: 5 |
    2019-08-09| RN| Application for restoration|Effective date: 20190703 |
    2019-08-16| FC| Favourable decision of inpi director general on an application for restauration.|Effective date: 20190709 |
    2020-03-30| PLFP| Fee payment|Year of fee payment: 6 |
    2021-03-30| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1552470A|FR3034093B1|2015-03-24|2015-03-24|DEVICE AND METHOD FOR FORMING GLASS|FR1552470A| FR3034093B1|2015-03-24|2015-03-24|DEVICE AND METHOD FOR FORMING GLASS|
    US15/561,067| US20180057389A1|2015-03-24|2016-03-24|Glass forming device and method|
    CN201680028963.XA| CN107592856B|2015-03-24|2016-03-24|Glass forming apparatus and method|
    PCT/EP2016/056685| WO2016151127A1|2015-03-24|2016-03-24|Device and method for forming glass|
    JP2018500859A| JP6686128B2|2015-03-24|2016-03-24|Glass forming apparatus and method|
    KR1020177029661A| KR20170129819A|2015-03-24|2016-03-24|Glass forming apparatus and method|
    [返回顶部]