US20180281356A1 - Reinforced safety glass and method of manufacture - Google Patents
Reinforced safety glass and method of manufacture Download PDFInfo
- Publication number
- US20180281356A1 US20180281356A1 US15/758,174 US201615758174A US2018281356A1 US 20180281356 A1 US20180281356 A1 US 20180281356A1 US 201615758174 A US201615758174 A US 201615758174A US 2018281356 A1 US2018281356 A1 US 2018281356A1
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- US
- United States
- Prior art keywords
- glass
- film layer
- autoclave
- safety
- pvb
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Definitions
- This invention refers to a safety glass and its obtainment procedure. Although it may have diverse application fields, its development arises from the need for safety glasses of high resistance in order to increase the safety of vehicles' occupants.
- PVB films manufactured by Kuraray Arg.
- PET PolyEthylene Terephthalate films
- C-PET Crystallizable PolyEthylene Terephthalate because of its high transparency
- PU PolyUrethane films
- Safety films with adhesive such as those manufactured by Llumar, 3M, Madico, Johnson & Johnson, Sunguard, etc.
- Safety films without adhesive such as those also manufactured by Llumar, 3M, Sunguard, etc. or safety films with adhesive from which the adhesive is removed.
- EP1322467B1 “INTRUSION RESISTANT GLASS LAMINATE” granted on Nov. 28, 2007. It consists of a laminated glass composed of: a first PVB film+a first PET film+a second PET film+a second PVB film, all of these inserted between two glasses. These films are placed between two glasses as usual.
- One of the purposes of this invention is to obtain a safety glass which offers high resistance to impacts using a single glass.
- Another purpose of this invention is to manufacture a safety glass reinforced on its interior as well as its exterior faces.
- Another purpose of this invention is to create an innovative method for the obtainment of a reinforced safety glass which reduces substantially the impact on the environment.
- Another purpose of this invention is to obtain a safety glass which, once broken, avoids the risk of cuts, lacerations or injuries of any kind.
- Another purpose of this invention is to obtain a safety glass which offers a higher sound isolation inside vehicles.
- Another purpose of this invention is to obtain a safety glass which reduces the passage of UV rays to the inside of vehicles, reducing, as a result, the temperature inside them.
- FIG. 1 schematically shows the components of a first exemplary embodiment of the safety glass.
- FIG. 2 shows a cut outline of the components of the first exemplary embodiment of the safety glass of this invention, including a polycarbonate film used as a bonding agent during the manufacturing process. Specifically, during the prelaminating process.
- FIG. 3 shows a cut outline of the components of a second exemplary embodiment of the reinforced safety glass of this present invention, including both polycarbonate films used during the assembling process. Specifically, during the prelaminating process.
- the present invention comprising safety glass 1 and the procedure for its obtainment will now be described using FIGS. 1 through 3 .
- High resistance safety glasses are used to provide higher safety inside the room surrounded at least partially by said glass.
- This invention has diverse application fields such as apertures for homes, surveillance booths and banks.
- its main application are vehicles of all kinds because it uses their original glasses, therefore eliminating the need for specific glasses.
- This application stands out from others which require the manufacturing of a new template glass during the manufacturing of the safety glass.
- films of diverse reinforcing materials are used. Their special features offer higher resistance to the glass.
- pressure and temperature are applied using autoclave in order to bond the reinforcing films to the original glass and between each other.
- the safety glass is basically composed of the original glass to be reinforced (with adhesive in its inner face), at least one PVB film and at least one C-PET film, in this same order.
- An exemplary embodiment of this present invention comprises at least one PVB film with a thickness of between 0.18 mm and 2 mm and a C-PET film with a thickness of between 0.18 mm and 2 mm.
- a safety film without adhesive may be applied on the exterior face of the original glass to be reinforced.
- Another alternative is to apply a safety film with adhesive, that is to say, a film including adhesive.
- the thickness of the safety film is approximately between 40 ⁇ m and 400 ⁇ m.
- the exterior face of it is reinforced once the interior face is reinforced.
- at least one PVB film and one C-PET film are applied, in this same order, to the exterior face of the glass, without adhesives.
- the steps for the obtainment of the safety glass are as follows.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joining Of Glass To Other Materials (AREA)
- Laminated Bodies (AREA)
- Glass Compositions (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
- This invention refers to a safety glass and its obtainment procedure. Although it may have diverse application fields, its development arises from the need for safety glasses of high resistance in order to increase the safety of vehicles' occupants.
- The current status of the technique involves diverse combinations of materials and procedures to obtain armored glasses. Common materials used are:
- a) Polyvinyl butyral films (herein after referred to as “PVB”). Example: PVB films manufactured by Kuraray Arg.
- b) PolyEthylene Terephthalate films (hereinafter referred to as “PET”), generally Crystallizable PolyEthylene Terephthalate because of its high transparency (hereinafter referred to as “C-PET”). Example: PET films manufactured by Kuraray Arg.
- c) PolyUrethane films (hereinafter referred to as “PU”). Example: PU films manufactured by Dayplas S.A.
- d) Safety films with adhesive, such as those manufactured by Llumar, 3M, Madico, Johnson & Johnson, Sunguard, etc.
- e) Safety films without adhesive, such as those also manufactured by Llumar, 3M, Sunguard, etc. or safety films with adhesive from which the adhesive is removed.
- f) Obviously, special glasses or original glasses are used for this application.
- Each of these materials have diverse densities and one or more layers may be used. The point is that the key to obtain positive and practical results for each need is based on the combination of films and especially on the procedure by which these films are combined with glasses. This is where this invention stands out and where one of the pillars which provide the basis for this patent application lies.
- Furthermore, there are operating aspects such as a higher efficiency and flexibility of procedures, together with the impact of such procedures on the environment, which could not be solved to date.
- In accordance with what has been analysed above, some antecedents for informational purposes follow:
- a) European Patent No. EP1322467B1 “INTRUSION RESISTANT GLASS LAMINATE” granted on Nov. 28, 2007. It consists of a laminated glass composed of: a first PVB film+a first PET film+a second PET film+a second PVB film, all of these inserted between two glasses. These films are placed between two glasses as usual.
- Aside from the details of the procedure, in this case two PET films are placed between PVB films, all of which is placed between two glasses, that is to say, two glasses are needed.
- b) U.S. Pat. No. 5,569,537 “Laminated glass with polyurethane resin layer and silane coupling agent layer” granted on Oct. 29, 1996. This patent protects laminated glass with polyurethane films which requires an adhesive agent. It is based on the chemical aspects of the silane agent.
- c) U.S. Pat. No. 5,445,890 “Bullet resistant glass/glass, glass/plastic, and plastic/plastic laminate composites” granted on Aug. 29, 1995. This patent protects a composite of laminated glass which comprises at least 2 glasses bonded by a layer of adhesive polyester. It may or may not include a “plastic” film between the two glasses, bonded by adhesive polyester.
- d) U.S. Pat. No. 4,241,140 “Laminated safety glass with polyurethane film”, granted on Dec. 23, 1980. It specifically protects polyurethane film used for safety glasses.
- e) U.S. Pat. No. 4,075,386 “Security film for shatterproofing windows” granted on Feb. 21, 1978. This patent refers to a method of applying films with adhesive and watery detergent. It comprises the basic concept of safety films.
- f) PCT Patent Application WO2003006240 A1 “Compositor interlayer for laminated glass” published on Jan. 23, 2013. This application claims the joint use of PU and PVB without considering a key aspect of the procedure modified by this application.
- i) U.S. Pat. No. 4,594,290 “Impact resistant laminate” granted on Jun. 10, 1986. It refers to a laminate with high ballistic resistance. It uses glass, PU, PMMA and PC.
- Although we have seen great progress in safety glasses during the last decades, a correct combination of films without adhesive which only requires a single glass, offering exceptional characteristics regarding resistance to impact, high transparency and low impact on the environment, could not be achieved yet. These are the key aspects of this invention.
- One of the purposes of this invention is to obtain a safety glass which offers high resistance to impacts using a single glass.
- Another purpose of this invention is to manufacture a safety glass reinforced on its interior as well as its exterior faces.
- Another purpose of this invention is to create an innovative method for the obtainment of a reinforced safety glass which reduces substantially the impact on the environment.
- Another purpose of this invention is to obtain a safety glass which, once broken, avoids the risk of cuts, lacerations or injuries of any kind.
- Additionally, another purpose of this invention is to obtain a safety glass which offers a higher sound isolation inside vehicles.
- Finally, another purpose of this invention is to obtain a safety glass which reduces the passage of UV rays to the inside of vehicles, reducing, as a result, the temperature inside them.
-
FIG. 1 schematically shows the components of a first exemplary embodiment of the safety glass. -
FIG. 2 shows a cut outline of the components of the first exemplary embodiment of the safety glass of this invention, including a polycarbonate film used as a bonding agent during the manufacturing process. Specifically, during the prelaminating process. -
FIG. 3 shows a cut outline of the components of a second exemplary embodiment of the reinforced safety glass of this present invention, including both polycarbonate films used during the assembling process. Specifically, during the prelaminating process. - The present invention comprising safety glass 1 and the procedure for its obtainment will now be described using
FIGS. 1 through 3 . - High resistance safety glasses are used to provide higher safety inside the room surrounded at least partially by said glass. This invention has diverse application fields such as apertures for homes, surveillance booths and banks. However, its main application are vehicles of all kinds because it uses their original glasses, therefore eliminating the need for specific glasses. This application stands out from others which require the manufacturing of a new template glass during the manufacturing of the safety glass.
- In order to obtain the safety glass of this present invention, films of diverse reinforcing materials are used. Their special features offer higher resistance to the glass. During the manufacturing process, pressure and temperature are applied using autoclave in order to bond the reinforcing films to the original glass and between each other.
- From the point of view of its construction, the safety glass is basically composed of the original glass to be reinforced (with adhesive in its inner face), at least one PVB film and at least one C-PET film, in this same order.
- An exemplary embodiment of this present invention, comprises at least one PVB film with a thickness of between 0.18 mm and 2 mm and a C-PET film with a thickness of between 0.18 mm and 2 mm.
- In addition to the PVB and C-PET films, a safety film without adhesive may be applied on the exterior face of the original glass to be reinforced. Another alternative is to apply a safety film with adhesive, that is to say, a film including adhesive.
- The thickness of the safety film (either with or without adhesive) is approximately between 40 μm and 400 μm.
- In another exemplary embodiment of the safety glass the exterior face of it is reinforced once the interior face is reinforced. In other words, at least one PVB film and one C-PET film are applied, in this same order, to the exterior face of the glass, without adhesives.
- Having described the exemplary embodiments of this invention, the steps for the obtainment of the safety glass are as follows.
- For the first exemplary embodiment:
-
- a) thorough cleaning of the original glass;
- b) ionize with ionizing gun at least one PVB film;
- c) insert at least one PVB film on the interior face of the original glass;
- d) ionize with ionizing gun at least one C-PET film;
- e) place at least one C-PET film over at least one PVB film;
- f) cut the excess of PVB and C-PET films by the edges;
- g) place a cover of polycarbonate, generally with a thickness between 1.5 and 4 mm, over the last C-PET film;
- h) place the product obtained from steps a) to g) inside a vacuum bag;
- i) vacuum the obtained product;
- j) put the vacuum bag inside an autoclave until it reaches a pressure of between 2 and 4 bar and a temperature of between 75° C. and 90° C.;
- k) once it reaches the temperature and pressure values indicated in step j) keep them constant for 40 minutes to 60 minutes;
- l) activate the cooling system of the autoclave until it reaches 70° C.;
- m) eliminate the air from the autoclave and open it;
- n) take the obtained product inside the vacuum bag out of the autoclave;
- o) remove the polycarbonate cover;
- p) make sure there are no air bubbles between the films;
- q) put the obtained product (without the polycarbonate cover and the vacuum bag) inside the autoclave again;
- r) activate the compressor until it reaches a pressure of between 1.5 and 3 bar;
- s) activate the autoclave until it reaches a temperature of between 120° C. and 135° C. and a pressure of between 10 bar and 12 bar;
- t) once it reaches the values indicated in step s) deactivate the compressor and the autoclave until the temperature lowers below 120° C.;
- u) activate the cooling system of the autoclave until it reaches 70° C.;
- v) eliminate the air from the autoclave and open it;
- w) take the obtained product (the safety glass) out of the autoclave;
- x) let it reach room temperature;
- y) polish the excess of films.
- A second exemplary realization, comprises the same steps as the example above, with the addition of step z). That is to say, the complete procedure comprises the following steps:
-
- a) thorough cleaning of the original glass;
- b) ionize with ionizing gun at least one PVB film;
- c) insert at least one PVB film on the interior face of the original glass;
- d) ionize with ionizing gun at least one C-PET film;
- e) place at least one C-PET film over at least one PVB film;
- f) cut the excess of PVB and C-PET films by the edges;
- g) place a cover of polycarbonate, generally with a thickness of between 1.5 and 4 mm, over the last C-PET film;
- h) place the product obtained from steps a) to g) inside a vacuum bag;
- i) vacuum the obtained product;
- j) put the vacuum bag inside an autoclave until it reaches a pressure of between 2 and 4 bar and a temperature of between 75° C. and 90° C.;
- k) once it reaches the temperature and pressure values indicated in step j) keep them constant for 40 minutes to 60 minutes;
- l) activate the cooling system of the autoclave until it reaches 70° C.;
- m) eliminate the air from the autoclave and open it;
- n) take the obtained product inside the vacuum bag out of the autoclave;
- o) remove the polycarbonate cover;
- p) make sure there are no air bubbles between the films;
- q) put the obtained product (without the polycarbonate cover and the vacuum bag) inside the autoclave again;
- r) activate the compressor until it reaches a pressure of between 1.5 and 3 bar;
- s) activate the autoclave until it reaches a temperature of between 120° C. and 135° C. and a pressure of between 10 bar and 12 bar;
- t) once it reaches the values indicated in step s) deactivate the compressor and the autoclave until the temperature lowers below 120° C.;
- u) activate the cooling system of the autoclave until it reaches 70° C.;
- v) eliminate the air from the autoclave and open it;
- w) take the obtained product (the safety glass) out of the autoclave;
- x) let it reach room temperature;
- y) polish the excess of films.
- z) place a safety film over the exterior face of the original glass to be reinforced.
- Finally, a third procedure, which is used for an exemplary realization which comprises the use of PVB and C-PET films in both the interior and exterior faces of the tempered glass, is as follows:
-
- a) thorough cleaning of the original glass;
- b) ionize with ionizing gun at least one PVB film;
- c) insert at least one PVB film on the interior face of the original glass;
- d) ionize with ionizing gun at least one C-PET film;
- e) place at least one C-PET film over at least one PVB film;
- f) repeat steps b) to e) applying these to PVB and C-PET films on the exterior face of the glass to be reinforced;
- g) cut the excess of PVB and C-PET films from the interior and exterior faces of the original glass;
- h) place a polycarbonate cover (generally with a thickness of 1.5 to 4 mm) over the last C-PET films (both in the exterior and the interior faces of the original glass);
- i) place the obtained product formed in steps a) to h) inside a vacuum bag;
- j) vacuum the obtained product;
- k) put the vacuum bag inside an autoclave until it reaches a pressure of between 2 bar and 4 bar and a temperature of between 75° C. and 90° C.;
- l) once it has reached the temperature and pressure values indicated in step k) keep them constant for 40 minutes to 60 minutes;
- m) activate the cooling system of the autoclave until it reaches 70° C.;
- n) eliminate the air from the autoclave and open it;
- o) take the obtained product inside the vacuum bag out of the autoclave;
- p) remove the polycarbonate cover;
- q) make sure there are no air bubbles between the films;
- r) put the obtained product (without the polycarbonate cover and the vacuum bag) inside the autoclave again;
- s) activate the compressor until it reaches a pressure of between 1.5 and 3 bar;
- t) activate the autoclave until it reaches a temperature of between 120 and 135° C. and a pressure of between 10 bar and 12 bar;
- u) once it reaches the pressure and temperature values indicated in steps s) and t), deactivate the compressor and the autoclave until the temperature lowers below 120° C.;
- v) activate the cooling system of the autoclave until it reaches 70° C.;
- w) eliminate the air from the autoclave and open it;
- x) take the obtained product (the safety glass) out of the autoclave;
- y) let it reach room temperature;
- z) polish the excess of the films.
- The revolutionary aspect of this last “sandwich-type” procedure, where the laminated glass is bonded to both polymer films, is that it eliminates the risk of cuts, lacerations, or injuries of any kind in the event that the tempered glass is damaged or broken. This is because all fragments of the laminated glass would stay adhered to either the internal or external polymer layers, or both.
- As those of skill in this field would understand, this aspect arises from the procedure itself. The fact that the purpose of this description is to enable an ordinary person to put the invention into practice, should not leave aside the broadness of this application. That is to say, minor modifications, for instance in the number of films used (materials), their thickness, the temperatures and/or pressures of the autoclave during the diverse stages of the procedure to obtain the safety glass, etc., are taken into consideration in the present invention.
Claims (17)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ARP150102890A AR103980A1 (en) | 2015-09-10 | 2015-09-10 | SECURITY GLASS AND PROCEDURE FOR OBTAINING |
AR20150102890 | 2015-09-10 | ||
PCT/US2016/051140 WO2017044875A1 (en) | 2015-09-10 | 2016-09-09 | Safety glass and method for obtainment |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/US2016/051140 A-371-Of-International WO2017044875A1 (en) | 2015-09-10 | 2016-09-09 | Safety glass and method for obtainment |
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Application Number | Title | Priority Date | Filing Date |
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US17/476,084 Continuation-In-Part US20220009206A1 (en) | 2015-09-10 | 2021-09-15 | Reinforced safety glass and method of manufacture |
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US20180281356A1 true US20180281356A1 (en) | 2018-10-04 |
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US15/152,784 Active 2036-12-01 US10093079B2 (en) | 2015-09-10 | 2016-05-12 | Reinforced safety glass and method of manufacture |
US15/758,174 Abandoned US20180281356A1 (en) | 2015-09-10 | 2016-09-09 | Reinforced safety glass and method of manufacture |
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US15/152,784 Active 2036-12-01 US10093079B2 (en) | 2015-09-10 | 2016-05-12 | Reinforced safety glass and method of manufacture |
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US (2) | US10093079B2 (en) |
AR (1) | AR103980A1 (en) |
BR (1) | BR112018004619B1 (en) |
MX (1) | MX2018002555A (en) |
WO (1) | WO2017044875A1 (en) |
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US10730368B1 (en) * | 2017-08-16 | 2020-08-04 | Apple Inc. | System with windows |
WO2019149730A1 (en) | 2018-01-31 | 2019-08-08 | Agc Glass Europe | Laminated glazing |
CN110549704A (en) * | 2019-07-08 | 2019-12-10 | 江苏华尚汽车玻璃工业有限公司 | Multilayer sound-insulation bulletproof glass and manufacturing method thereof |
EP4000918A1 (en) | 2020-11-12 | 2022-05-25 | Folex Coating GmbH | Composite film for panels |
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US4556600A (en) * | 1979-09-03 | 1985-12-03 | Saint Gobain Vitrage | Laminated glasses using a non-thermoplastic adhesive insert layer |
US5567529A (en) * | 1991-11-27 | 1996-10-22 | E. I. Du Pont De Nemours And Company | Multilayered glass laminate having enhanced resistance to penetration by high velocity projectiles |
US5618619A (en) * | 1994-03-03 | 1997-04-08 | Monsanto Company | Highly abrasion-resistant, flexible coatings for soft substrates |
US20090263651A1 (en) * | 2008-02-06 | 2009-10-22 | Cook Richard L | Optically transparent resilient laminate materials and methods of manufacture |
US20100285310A1 (en) * | 2008-01-09 | 2010-11-11 | Central Glass Company ,Limited | Process for Producing Laminated Glass with Inserted Plastic Film and Laminated Glass with Inserted Plastic Film |
US20120076965A1 (en) * | 2009-09-22 | 2012-03-29 | Graham Packaging Lc, L.P. | Pet containers with enhanced thermal properties and process for making same |
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ZA764846B (en) * | 1975-08-29 | 1977-04-27 | Libbey Owens Ford Co | Automotive glazing structure and method of producing same |
US5024895A (en) * | 1990-06-18 | 1991-06-18 | Monsanto Company | Laminate for a safety glazing |
EP0676996B8 (en) * | 1992-12-30 | 2001-11-14 | MANNHEIM, Jose, R. | A method of forming a curved, shatterproof glass laminate |
FR2725399B1 (en) * | 1994-10-06 | 1996-11-08 | Saint Gobain Vitrage | SAFETY GLASS |
ATE529388T1 (en) * | 2007-07-31 | 2011-11-15 | Central Glass Co Ltd | LAMINATED GLASS WITH INSERT PLASTIC FILM |
US20090087669A1 (en) * | 2007-09-28 | 2009-04-02 | Hayes Richard A | Glass laminates comprising acoustic interlayers and solar control films |
BR112012017326A2 (en) * | 2009-12-24 | 2016-04-19 | Asahi Glass Co Ltd | laminated glass and method for its production |
-
2015
- 2015-09-10 AR ARP150102890A patent/AR103980A1/en active IP Right Grant
-
2016
- 2016-05-12 US US15/152,784 patent/US10093079B2/en active Active
- 2016-09-09 BR BR112018004619-1A patent/BR112018004619B1/en active IP Right Grant
- 2016-09-09 US US15/758,174 patent/US20180281356A1/en not_active Abandoned
- 2016-09-09 WO PCT/US2016/051140 patent/WO2017044875A1/en active Application Filing
- 2016-09-09 MX MX2018002555A patent/MX2018002555A/en unknown
Patent Citations (6)
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US4556600A (en) * | 1979-09-03 | 1985-12-03 | Saint Gobain Vitrage | Laminated glasses using a non-thermoplastic adhesive insert layer |
US5567529A (en) * | 1991-11-27 | 1996-10-22 | E. I. Du Pont De Nemours And Company | Multilayered glass laminate having enhanced resistance to penetration by high velocity projectiles |
US5618619A (en) * | 1994-03-03 | 1997-04-08 | Monsanto Company | Highly abrasion-resistant, flexible coatings for soft substrates |
US20100285310A1 (en) * | 2008-01-09 | 2010-11-11 | Central Glass Company ,Limited | Process for Producing Laminated Glass with Inserted Plastic Film and Laminated Glass with Inserted Plastic Film |
US20090263651A1 (en) * | 2008-02-06 | 2009-10-22 | Cook Richard L | Optically transparent resilient laminate materials and methods of manufacture |
US20120076965A1 (en) * | 2009-09-22 | 2012-03-29 | Graham Packaging Lc, L.P. | Pet containers with enhanced thermal properties and process for making same |
Also Published As
Publication number | Publication date |
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MX2018002555A (en) | 2018-05-28 |
WO2017044875A1 (en) | 2017-03-16 |
BR112018004619A2 (en) | 2018-09-25 |
US10093079B2 (en) | 2018-10-09 |
US20170072662A1 (en) | 2017-03-16 |
BR112018004619B1 (en) | 2022-10-04 |
AR103980A1 (en) | 2017-06-21 |
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