• 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:
    ANTIBALLISTIC PANEL The invention relates to an anti-ballistic panel. The panel comprises at least a first stack and a second stack, wherein the first stack has a plurality of first laminates made of a first type of fiber and the second stack has a plurality of second laminates made of a second type of fiber, in the first type of fiber has a traction module in the range of 40? 85 GPa, measured according to ASTM D7269 and the second fiber type has a traction module in the range of 86 - 140 GPa, measured according to ASTM D7269.
    公开号:BR112013028025B1
    申请号:R112013028025-5
    申请日:2012-04-26
    公开日:2021-03-16
    发明作者:Marc-Jan De Haas；Chinkalben Patel
    申请人:Teijin Aramid B.V.；Barrday Inc；
    IPC主号:
    专利说明:

    Description:
    [001] The invention relates to an anti-ballistic panel comprising at least a first type of battery and a second type of battery.
    [002] Anti-ballistic panels are well known in the prior art.
    [003] For example, a ballistic resistance panel is described in WO 2008/14020. The panel according to this document comprises a first layer of fiber and a second layer of fiber, wherein the first and second layers of fiber have different types of high tenacity fiber. The first and second layers of fiber are formed of a plurality of layers, which have been laminated together.
    [004] In WO 2008/115913, a fabric composed of multilayers is described. This composite fabric also comprises a first and a second layer with high tenacity fibers, in which the layers are directly or indirectly linked together.
    [005] US 2005/0153098 describes a hybrid laminated sheet. The sheet comprises laminates in which each laminate comprises different layers. A first and a fourth layer are made of a first type of fiber and a second and third layers are made of a second different type of fiber.
    [006] In all prior art documents, the different types of fiber are used in combination with each other. This means that different types of fiber are combined in a layer with each other or layers of different types of fiber make up a laminate. In such a combination, the positive effect of one special type of fiber is superimposed by the other type of fiber.
    [007] It is, therefore, the objective of the present invention to create an anti-ballistic panel in which the properties of different types of fiber are positively influenced by those of the other type of fiber.
    [008] The objective is achieved by an anti-ballistic panel with the characteristics according to claim 1.
    [009] The anti-ballistic panel according to claim 1 comprises at least a first type of cell (first cell) and a second type of cell (second cell), wherein the first cell type has a plurality of first laminates composed of a first type of fiber and the second type of pile has a plurality of second laminates composed of a second type of fiber, in which the first type of fiber has a tensile modulus in the range of 40 - 85 GPa, measured according to ASTM D7269 and the second type of fiber has a traction module in the range of 86 - 140 GPa, measured according to ASTM D7269.
    [0010] Preferably, the first type of fiber has a traction module in the range of 45 - 80 GPa, more preferred in the range of 50 - 75 GPa and, most preferred in the range of 60 - 70 GPa, measured according to ASTM D7269 .
    [0011] Preferably, the second type of fiber has a traction module in the range of 90 - 135 GPa, more preferred in the range of 95 - 130 GPa and, most preferred in the range of 100 - 120 GPa, measured according to ASTM D7269 .
    [0012] Due to the fact that the first pile displays only the first type of fiber as fiber and the second pile displays only the second type of fiber as fiber, the properties of these different types of fiber still remain. It has been shown that a panel comprising two different types of stack made of fibers with different tensile modules has a better anti-ballistic performance than a panel comprising two stacks, where each stack consists of both types of different fibers. For a person skilled in the art, this result was absolutely surprising.
    [0013] The term traction module should be understood as a measure of the resistance of the wire, ribbon or cord to an extension when a force is applied. It is useful to estimate the response of a textile-reinforced structure to the application of varying forces and rates of stretching.
    [0014] For the purposes of the present invention, a fiber is an elongated body, the dimension of which is much greater than the transversal dimensions of width and thickness. Therefore, the term fiber includes tapes, monofilament, multifilament, tape, short fiber, textile fiber and other forms of chopped, cut or discontinuous fiber and the like having a regular or irregular cross section. A yarn is a continuous cord made up of many fibers or filaments.
    [0015] A laminate should be understood as a combination of at least two layers of fiber with a matrix material. Preferably, each fiber layer is impregnated with a matrix material, most preferred with the same matrix material. If different matrix materials are used, the matrix materials are distinguished from each other. As a first matrix material, an elastomer, for example, can be used. As a second matrix material an epoxy resin can be used. In another preferred embodiment, the matrix materials of different fiber layers are the same or different and different fiber layers have different matrix contents. In an especially preferred embodiment, a laminate has a film on two external surfaces. Preferably, a laminate comprises four layers of fiber, whereby each layer of fiber is impregnated with a matrix material.
    [0016] A fiber layer is preferably a unidirectional fiber layer or a woven fiber layer. Both of the aforementioned layers could be impregnated with a matrix material. A stack can display only unidirectional fiber layers or woven fiber layers or a combination of both types of layers.
    [0017] The first stack as well as the second stack comprise a plurality of laminates. Each laminate preferably comprises at least two layers of fiber. The first stack shows laminates made from a first type of fiber. Preferably, no other fibers are used for the laminates and, therefore, for the first stack. The second stack also exhibits a plurality of laminates, but the laminates of the second stack are made of a second type of fiber. Preferably, no other fibers are used for the laminates of the second stack. Because of this, the first stack and the second stack are made of different fibers, in which the fibers are distinguished with respect to their traction module.
    [0018] In a preferred embodiment, at least one layer, more preferred each layer of the first stack and / or the second stack is made of tapes. This means that at least one laminate, more preferred each laminate of the first stack and / or the second stack comprises layers made of tapes. It is further preferred that at least one layer, more preferred each layer of the first stack and / or the second stack is made of yarn.
    Preferably, each of the plurality of laminates of the first and / or the second stack comprises unidirectional fiber layers, more preferred each laminate comprises at least two unidirectional fiber layers and, most preferred, four unidirectional fiber layers. Preferably, the fibers of the unidirectional layers are in a matrix. The fiber direction of a laminate layer has an angle relative to the fiber direction of an adjacent layer of the same laminate, where the angle is preferably between 40o and 100o, more preferred between 45o and 95o and, most preferred, approximately 90o .
    [0020] Unidirectional fiber layers are constructed of fibers that are aligned parallel to each other along a common fiber direction. In a preferred embodiment, unidirectional aligned ribbons or threads form the layers of the first stack and / or the second stack. If yarn builds the layer, the yarn bundles arranged unidirectionally are coated or embedded with resin matrix material. The resin matrix material for the layers can be formed from a wide variety of elastomeric materials, having desired characteristics. In one embodiment, the elastomeric materials used in such a matrix have an initial tensile modulus (modulus of elasticity) equal to or less than about 6000 psi (41.4 MPa), as measured according to ASTM D638. More preferably, the elastomer has an initial tensile modulus equal to or less than about 2400 psi (16.5 MPa). Most preferably, the elastomeric material has an initial tensile modulus equal to or less than about 1200 psi (8.23 MPa). These resinous materials are typically thermoplastic in nature, however thermosetting materials are also useful. The proportion of resinous material to fiber in the layer can vary widely, depending on the end use and is usually in the range of 5 - 26% based on the weight of the matrix with respect to the weight of the matrix and fiber. Suitable matrix materials are block copolymers SIS (styrene-isoprene-styrene), SBR (styrene-butadiene rubber), polyurethanes, ethylene acrylic acid, polyvinyl butyral.
    [0021] Preferably, at least one laminate from the first and / or the second stack comprises at least one layer of woven fiber.
    [0022] Preferably, the number of laminates that make up a first and / or second stack is between 1 and 30. This means that the first and / or second stack has between 2 and 120 layers.
    [0023] Preferably, the panel has a body face and a contact face, whereby the first stack is arranged for the contact face and the second stack is arranged for the body face of the panel or opposite. The body face is arranged for the user's body.
    [0024] Fibers suitable for the layers of the first pile can be aramid fibers, such as Twaron® Type 1000 or Twaron® Type 2100.
    [0025] Fibers suitable for the layers of the second pile can also be aramid fibers, such as Twaron® Type 2000 or Twaron® Type 2200.
    [0026] Preferably, the first type of fiber has an elongation at break in the range of 3.9 - 4.6%, measured according to ASTM D7269.
    [0027] It is also preferred if the second type of fiber has an elongation at break in the range of 2.5 - 3.8%, measured according to ASTM D7269.
    [0028] Preferably, at least one laminate from the first and / or the second stack has at least one film on its outer surface. It is especially preferred if a laminate has a film on each outer surface. This means that each laminate of the first and / or the second stack preferably comprises two films, whereby the films are arranged on the outer surfaces of the laminate. The films can be included in the layers, for example, to allow different layers to slide over each other. Any suitable film can be used, such as films made of polyolefin, for example, linear low density polyethylene films (LLDPE) and ultra high molecular weight polyethylene films (UHMWPE), as well as polyester films, nylon films, films polycarbonate and the like. These films can be of any desired thickness. Typical film thicknesses range from about 2 - 20 μm. Preferably, the panel is used for hard or soft anti-ballistic applications.
    [0029] Preferably, the first stack comprises layers of low modulus aramid fibers, whereby the layers are unidirectional fiber layers. The layers are impregnated with a Rovenel® 4019 matrix (MCP, Mallard Creek Polymers). The second stack comprises layers of high modulus aramid fibers, whereby the layers of the second stack are also unidirectional fiber layers. The layers of the second pile are impregnated with a matrix mixture of approximately 60% Robene® 4220 and approximately 40% Rovene® 4176. The first pile and the second pile can be arranged on the contact face or on the body face.
    [0030] In another preferred embodiment, the first stack comprises layers of high modulus aramid fibers, whereby the layers are unidirectional fiber layers. The layers are impregnated with Rovene® 4019. The second stack comprises layers of low modulus aramid fibers, whereby the layers of the second stack are also unidirectional fiber layers. The layers of the second pile are impregnated with a matrix mixture of approximately 60% Rovene® 4220 and approximately 40% Rovene® 4176. The first pile and the second pile can be arranged on the contact face or on the body face.
    [0031] In another preferred embodiment, the first stack comprises layers of low modulus aramid fibers, whereby the layers are unidirectional fiber layers. The layers are impregnated with Rhoplex® E-358 (Rohn and Haas). The second stack comprises layers of high modulus aramid fibers. The layers of the second pile are impregnated with a matrix mixture of approximately 60% Rovene® 4220 and approximately 40% Rovene® 4176. The first pile and the second pile can be arranged on the contact face or on the body face.
    [0032] In another preferred embodiment, the first stack comprises layers of high modulus aramid fibers, whereby the layers are unidirectional fiber layers. The layers are impregnated with Rhoplex® E-358. The second stack comprises layers of low modulus aramid fibers, whereby the layers of the second stack are also unidirectional fiber layers. The layers of the second pile are impregnated with a matrix mixture of approximately 60% Rovene® 4220 and approximately 40% Rovene® 4176. The first pile and the second pile can be arranged on the contact face or on the body face.
    [0033] All values% of the four embodiments mentioned above are volumetric values.
    [0034] The invention is further elucidated by the figures.
    [0035] Figure 1 schematically shows a panel comprising a first type of battery and a second type of battery.
    [0036] Figure 2 shows the energy absorption of simple laminates.
    [0037] In figure 1, an anti-ballistic panel 3 is shown schematically. Panel 3 comprises a first stack 1 and a second stack 2, each with a laminate. In the embodiment of figure 1, the first stack 1 - this means the first laminate (and also the second stack 2, this means the second laminate) - is constructed of a layer of film 4, a first layer of unidirectional fiber 5, a second unidirectional layer 6 and another layer of film 7. The first unidirectional fiber layer 5 and the second unidirectional fiber layer 6 are impregnated with a matrix material. The unidirectional fiber layers 5 and 6 are placed crosswise with each other, this means that the fiber direction of the fiber layer 5 has an angle of approximately 50o with respect to the fiber direction of the fiber layer 6. In this embodiment, the the first stack 1 and the second stack 2 have the same elements (two unidirectional fiber layers 5, 6 and two layers of film 4, 7). It is also possible that the first stack 1 comprises four layers of fiber and the second stack 2 comprises two layers of fiber or the opposite. In all embodiments, the first stack 1 differs from the second stack 2 with respect to the fiber pull module used. The fiber layers 5, 6 and the film layers 4, 7 are laminated together to form the first stack 1. In general, it is preferred to laminate the fiber layers with or without the film layers together, to build a laminate for the first stack 1 and / or the second stack 2. The laminates are preferably arranged on top of each other to form the first and / or the second stack. This means that inside the stack the laminates are preferably not bonded together. Example 1
    [0038] For example 1, three laminates, each consisting of four layers of fiber, are constructed. Each fiber layer is a unidirectional fiber layer (UD), whereby the fiber direction of the fibers of the fiber layer of each laminate was 0o, 90o, 0o, 90o. As a matrix system for each fiber layer Prinlin B7137 AL from Henkel was chosen which consists of a styrene-isoprene-styrene block copolymer (SIS). During the manufacture of the UD fiber layer, this water-based matrix system is applied, via a light contact roller, to the fiber (yarn) of the fiber layer and subsequently dried on a hot plate. The matrix concentration was determined by the dry unidirectional fiber layer (that is, the concentration based on the dry yarn weight) and is given in Table 1. Four unidirectional fiber layers were laminated in a 4-ply laminate with an LDPE film 10 μm on each external side of the laminate (one laminate comprises two layers of film), using the lamination conditions indicated in Table 1. In total, a 4-fold laminate with LDPE film propagated through laminator three times: the first time for 2-ply laminating (this means that two layers of UD fiber have been laminated together), the second time for 4-ply laminating (this means that two 2-ply sheets have been laminated on a laminate of 4-folds) and the third time for LDPE film lamination on the 4-fold laminate. The temperature (T) and the lamination speed (v) were maintained at comparable levels for each pass, the pressure was varied and is indicated respectively by P1 (first lamination), P2 (second lamination) and P3 (third lamination) in the Table 1. The surface density of the 4-fold construction with LDPE film on both sides was determined as well. Table 1: Lamination conditions and construction of the different laminates

    [0039] All laminates (4-ply film + LDPE on both external sides) were tested in the same condition. A first sensor was arranged at a distance of 12 cm from the laminate. A second sensor is arranged behind the laminate (with respect to the mouth of the firearm) at a distance of 12 cm from the laminate. The distance between the firearm mouth and the laminate was 30 cm. The first sensor and the second sensor measure the speed of the bullet. The bullet is fired from an air rifle. The laminates are cut into pieces of test sample, whereby the typical test sample dimensions are 118 x 118 mm. The type of bullet used is the lead-based H-point (field line) produced by RUAG Ammotec GmbH with a caliber of 22 (5.5 mm) and a weight of 0.92 g. The speed of arrival of the bullet can be varied in the range of 240 m / s to about 360 m / s. Subtracting the kinetic energy of the bullet (1/2 * massabala * v2 bullet) after propagation through the laminate of the kinetic energy of the bullet before propagating the shield through the laminate and subsequently dividing by the surface density of the laminate, an energy absorption (SEA) can be determined. First laminate
    [0040] In the first laminated Twaron Type 2000 wire, f1000, 1100 dtex was used as the fibrous material. The wire has a traction module of 91 GPa measured according to ASTM D7269, the breaking toughness was 2350 mN / tex measured according to D7269, the elongation at break in% was 3.5, measured according to D7269 . Second laminate
    [0041] In the second laminated Waron Type 2100 wire, f1000, 1100 dtex was used as a fibrous material. The yarn has a 58 GPa tensile module measured according to ASTM D7269, the breaking strength is 2200 mN / tex, measured according to D7269, the elongation at break in% was 4.4, measured according to D7269. Third laminate
    [0042] In the third laminated Twaron Type 2200 wire, f1000, 1210 dtex was used as a fibrous material. The wire has a tensile modulus of 108 GPa, measured according to ASTM D7269, the tensile strength at break is 2165 mN / tex, measured according to D7269, the elongation at break in% is 2.8, measured according to with D7269.
    [0043] In Figure 2, the specific energy absorption (SEA) of the laminates is shown as a function of the speed of entry of the bullet.
    [0044] Curve A represents the specific energy absorption (SEA) with respect to the bullet speed for the first laminate (Twaron Type 2000, f1000, 1100 dtex). Curve B represents specific energy absorption (SEA) with respect to bullet speed for the third laminate (Twaron Type 2200, f1000, 1210 dtex) and Curve C for the second laminate (Twaron Type 2100, f1000, 1100 dtex). It can be understood that the goal is to have a SEA value as high as possible for each incoming bullet speed. Curve A represents the laminate made of high modulus fiber and this laminate shows very good energy absorption at low speed of the bullet. On the other hand, curve C represents a laminate made of low modulus fibers and it can be seen that this laminate has a lower energy absorption in the low speed area (compared to the laminate represented by curve A and B). Curve B also represents a laminate made of high modulus fibers and this laminate also shows a high energy absorption in the low speed area of the bullet (comparable to curve A). In the high-speed area, the energy absorption of curve C and curve A is comparable with each other, meaning that laminate made of low modulus fibers show similar energy absorption as laminate made of high modulus fiber. It is therefore proven that an anti-ballistic panel comprising two stacks, whereby the first stack is made up of at least one laminate of low modulus fibers and the second stack is made of at least one laminate of high modulus fibers. , has an energy absorption similar to that of an anti-ballistic panel made of two stacks, whereby both stacks are made of laminates of fibers with a high tensile modulus. Advantageously, an anti-ballistic panel of the described technique (this means with two different types of fiber for each stack) is cheaper, without decreasing the anti-ballistic performance. Example 2
    [0045] For this example, three types of laminates, each consisting of four layers of fiber, are constructed.
    [0046] Each fiber layer is a unidirectional fiber layer (UD), whereby the fiber direction of the fibers of the fiber layers of each laminate is 0o, 90o, 0o, 90o. As a matrix system for each fiber layer Prinlin B7137 AL from Henkel was chosen, which consists of a styrene-isoprene-styrene block copolymer (SIS). During the manufacture of the UD fiber layer, this water-based matrix system is applied via a light contact roller to the fiber (yarn) of the fiber layer and subsequently dried on a hot plate. The matrix concentration was determined by the unidirectional fiber layer (ie, the concentration based on dry yarn weight) and is given in Table 2. Four unidirectional fiber layers were laminated on a 4-layer laminate with an LDPE film of 10 μm on each external side of the laminate (a laminate comprises two layers of film), using the lamination conditions indicated in Table 2. In total, a 4-layer laminate with LDPE film propagated through the laminator three times : the first time for 2-layer lamination (this means that two layers of UD fiber have been laminated together), the second time for 4-layer lamination (this means that two 2-layer sheets have been laminated on a 4-layer laminate) layers) and the third time for laminating LDPE film on the 4-layer laminate. The temperature (T) and the lamination speed were maintained at comparable levels for each pass, the pressure was varied and is indicated, respectively, by P1 (first lamination), P2 (second lamination) and P3 (third lamination) in Table 2 The surface density of the 4-layer construction with LDPE film on both sides was also determined according to ASTM D3776-96. The matrix content (% w) is based on the dry fiber weight: Matrix content = (Matrix weight / dry fiber weight) x 100% Table 2: Lamination conditions and construction of the different laminates

    [0047] The 3 laminates as shown in Table 2 are characterized as follows: Laminate No. 4
    [0048] In Laminate No. 4 the Twaron wire type 2000, f1000, 1100 dtex was used as a fibrous material. The wire has a tensile modulus of 91 GPa, measured according to ASTM d7269, the tensile strength at break was 2350 mN / tex, measured according to D7269, the elongation at break in% was 3.5, measured according to with D7269. Laminate No. 5
    [0049] In laminate No. 5 Twaron wire Type D2600 (type of development), f2000, 1100 dtex was used as a fibrous material. The wire has a traction module of 63 GPa, measured according to ASTM D7269, the tensile strength at break is 2502 mN / tex, measured according to D7269, the elongation at break in% was 4.3, measured according to with D7269. Laminate No. 6
    [0050] In laminate No. 6, the Twaron wire Type D2600 (type of development), f2000, 1100 dtex, was used as a fibrous material. The wire has a traction module of 96 GPa, measured according to ASTM D7269, the breaking strength is 2582 mN / tex, measured according to D7269, the elongation at break in% is 3.6, measured according to with D7269. The resulting panels were evaluated for their anti-ballistic capacity by measuring v50, that is, the speed in m / s at which 50% of the projectiles were stopped. The projectiles used were .357 Magnum and 9 mm DM41, obliquity 0o. The v50 rating is described, for example, in MIL STD 662F.
    [0051] The v50 values were measured for three different anti-ballistic panel constructions. The panels that were tested against .357 Magnum had a surface density of about 3.4 kg / m2 (15 laminates) and the panels that were tested against 9 mm DM41 had a surface density of about 4.3 kg / m2 ( 19 laminates): • In construction 1, all panel laminates are Laminate No. 4. • In construction 2, about 50% of panel laminates are Laminate No. 5 and about 50% of panel laminates are Laminate No 6. For panels tested against.357 Magnum this resulted in 8 layers of Laminate No. 5 and 7 layers of Laminate No. 6. For panels tested against 9mm DM41 ammunition this resulted in 10 layers of Laminate No. 5 and 9 layers of Laminate No. 6. The first pile of Laminates No. 5 is arranged for the contact face and the second pile of Laminates No. 6 is arranged for the face of the body. • In construction 3, about 50% of the laminates of the panel are Laminate No. 5 and about 50% of the laminates of the panel are Laminate No. 6. For the panels tested against.357 Magnum this resulted in 8 layers of Laminate No. 5 and 7 layers of No. 6 Laminate. For panels tested against DM41 9mm ammunition, this resulted in 10 layers of No. 5 Laminate and 9 layers of No. 6 Laminate. The first pile of No. 6 Laminates is arranged for the contact face and the second stack of Laminates No. 5 is arranged for the face of the body. Table 3

    [0052] From Table 3 it can be seen that an anti-ballistic panel, consisting of two stacks, in which the first stack consists of laminates made of fibers with a module of 63 GPa and the second stack consists of laminates made of fibers with a module of 63 GPa. 96 GPa, has higher v50 values, compared to an anti-ballistic panel consisting only of laminates made of fibers with a 91 GPa module. Reference Numbers 1 first stack 2 second stack 3 panel 4 film (film layer) 5 film layer fiber 6 fiber layer 7 film (film layer) Curve 8 curve C curve
    权利要求:
    Claims (9)
    [0001]
    1. Anti-ballistic panel (3) comprising at least a first stack (1) and a second stack (2), wherein the first stack (1) has a plurality of first laminates made of a first type of fiber and the second stack (2) has a plurality of second laminates made of a second type of fiber, characterized by the fact that the first type of fiber has a tensile modulus in the range of 40 - 85 GPa, measured according to ASTM D7269 and the second type fiber has a traction module in the range of 86 - 140 GPa, measured according to ASTM D7269.
    [0002]
    Anti-ballistic panel (3) according to claim 1, characterized in that each laminate of the first stack (1) and / or the second stack (2) comprises at least one unidirectional fiber layer (5, 6).
    [0003]
    Anti-ballistic panel (3) according to claim 2, characterized in that the fibers of at least two layers of unidirectional fibers (5, 6) of the laminate are arranged at an angle of 90o in relation to each other.
    [0004]
    Anti-ballistic panel (3) according to claim 1, characterized in that each laminate of the first stack (1) and / or the second stack (2) comprises at least one woven fiber layer.
    [0005]
    Anti-ballistic panel (3) according to any one of claims 1 to 4, characterized in that the panel (3) has a body face and a contact face and the first stack (1) is arranged for the face contact and the second battery (2) is arranged for the body face of the panel (3).
    [0006]
    6. Anti-ballistic panel (3) according to any one of claims 1 to 4, characterized in that the panel (3) has a body face and a contact face and the second stack (2) is arranged for the face contact and the first battery (1) is arranged for the body face of the panel (3).
    [0007]
    Anti-ballistic panel (3) according to any one of claims 1 to 6, characterized in that at least one laminate of the first and / or the second stack (1, 2) has at least one film (4, 7) on its outer surface.
    [0008]
    8. Anti-ballistic panel (3) according to any one of claims 1 to 7, characterized by the fact that the first type of fiber has an elongation at break in the range of 3.9 - 4.6%, measured according to ASTM D7269.
    [0009]
    9. Anti-ballistic panel (3) according to any one of claims 1 to 8, characterized by the fact that the second type of fiber has an elongation at break in the range of 2.5 - 3.8%, measured according to ASTM D7269.
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    法律状态:
    2020-08-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-10-20| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-02-09| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-03-16| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/04/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP11164552|2011-05-03|
    EP11164552.9|2011-05-03|
    PCT/EP2012/057588|WO2012150164A1|2011-05-03|2012-04-26|Antiballistic panel|
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