Patents by Inventor Tatsuya Kouyama
Tatsuya Kouyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230046897Abstract: The present invention provides: a laminate for a gasket of a fuel cell, the laminate including a heat seal layer, having excellent moisture and heat resistance, and being suitable for a gasket of a fuel cell; a gasket; a membrane electrode junction including the gasket; and a fuel cell. A laminate includes a base material and a heat seal layer arranged on the base material. The heat seal layer is a reaction product of a heat sealant containing an amorphous polyester polyol (A), an epoxy resin (B), and an isocyanate compound (C). The amorphous polyester polyol (A) is a reaction product of a polyvalent carboxylic acid and a polyhydric alcohol. An amount of aromatic polyvalent carboxylic acid in the polyvalent carboxylic acid is 95% by mass or more. A glass transition temperature of the amorphous polyester polyol (A) is ?20° C. or more and 40° C. or less.Type: ApplicationFiled: August 4, 2022Publication date: February 16, 2023Applicant: DIC CorporationInventors: Hiroki Kobayashi, Tatsuya Kouyama
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Patent number: 11063315Abstract: An object of the present invention is to provide a laminating adhesive composition for a laminate, the composition having excellent adhesion between a metal layer and a plastic layer of a laminate, electrolyte solution resistance even after low-temperature aging, and a high retention percentage of the resistance, and allowing no delamination between layers to occur over time; a method for producing the laminating adhesive composition; a laminate using the adhesive; and a secondary battery. The object is achieved by providing a laminating adhesive containing a polyolefin resin (A) and an epoxy compound (B). The polyolefin resin (A) is a polymer in which propylene and 1-butene are the main monomers and has a crystallization peak temperature within the range of 28° C. to 38° C.Type: GrantFiled: May 10, 2016Date of Patent: July 13, 2021Assignee: DIC CORPORATIONInventors: Hidemi Nakamura, Takatoshi Matsuo, Tatsuya Kouyama
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Patent number: 11063313Abstract: The invention provides a packaging material that has high formability and that does not undergo a decrease in the adhesion strength between layers and appearance defects such as lifting between layers even after thermal fusion between portions of the sealant layer performed for sealing battery elements and furthermore after a long-term durability test under high temperature and high humidity. The adhesive for the packaging material including, as essential components, a polyol composition (A) and a polyisocyanate composition (B), wherein the polyol composition (A) includes a polyester polyol made from, as essential materials, a polybasic acid or its derivative and a polyhydric alcohol, the polybasic acid or its derivative material is all an aromatic-ring-containing polybasic acid or its derivative, and the polyester polyol has a number-average molecular weight in a range of 3000 to 100000; a battery packaging material, a battery container, and a battery that use the adhesive.Type: GrantFiled: December 19, 2017Date of Patent: July 13, 2021Assignee: DIC CORPORATIONInventors: Seiji Mizuta, Hiroki Kobayashi, Takatoshi Matsuo, Hidemi Nakamura, Takashi Mihara, Tsutomu Kanno, Akio Umino, Hideaki Takei, Tatsuya Kouyama
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Publication number: 20200106061Abstract: The invention provides a packaging material that has high formability and that does not undergo a decrease in the adhesion strength between layers and appearance defects such as lifting between layers even after thermal fusion between portions of the sealant layer performed for sealing battery elements and furthermore after a long-term durability test under high temperature and high humidity. The adhesive for the packaging material including, as essential components, a polyol composition (A) and a polyisocyanate composition (B), wherein the polyol composition (A) includes a polyester polyol made from, as essential materials, a polybasic acid or its derivative and a polyhydric alcohol, the polybasic acid or its derivative material is all an aromatic-ring-containing polybasic acid or its derivative, and the polyester polyol has a number-average molecular weight in a range of 3000 to 100000; a battery packaging material, a battery container, and a battery that use the adhesive.Type: ApplicationFiled: December 19, 2017Publication date: April 2, 2020Applicant: DIC CorporationInventors: Seiji Mizuta, Hiroki Kobayashi, Takatoshi Matsuo, Hidemi Nakamura, Takashi Mihara, Tsutomu Kanno, Akio Umino, Hideaki Takei, Tatsuya Kouyama
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Publication number: 20190131595Abstract: An object of the present invention is to provide a laminating adhesive composition for a laminate, the composition having excellent adhesion between a metal layer and a plastic layer of a laminate, electrolyte solution resistance even after low-temperature aging, and a high retention percentage of the resistance, and allowing no delamination between layers to occur over time; a method for producing the laminating adhesive composition; a laminate using the adhesive; and a secondary battery. The object is achieved by providing a laminating adhesive containing a polyolefin resin (A) and an epoxy compound (B). The polyolefin resin (A) is a polymer in which propylene and 1-butene are the main monomers and has a crystallization peak temperature within the range of 28° C. to 38° C.Type: ApplicationFiled: May 10, 2016Publication date: May 2, 2019Applicant: DIC CorporationInventors: Hidemi Nakamura, Takatoshi Matsuo, Tatsuya Kouyama
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Publication number: 20180248156Abstract: There are provided a laminating adhesive including, as essential components, an olefin resin (A) having acid groups or acid anhydride groups, a curing agent (B), and a styrene resin (C), wherein a mixing ratio of the styrene resin (C) relative to 100 parts by mass of the olefin resin (A) is 0.01 to 1.5 parts by mass; a multilayer film including, as an essential film structure, a laminate obtained by laminating a non-stretched polyolefin film and a metal film to each other with the laminating adhesive; and a secondary battery produced by using the multilayer film.Type: ApplicationFiled: August 25, 2016Publication date: August 30, 2018Applicant: DIC CorporationInventors: Hidemi Nakamura, Takatoshi Matsuo, Tatsuya Kouyama
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Publication number: 20170327720Abstract: The invention provides an adhesive coating material which realizes excellent adhesive strength and moist-heat resistance at the time of bonding a solar cell sealing material and a base sheet, a polyol composition for the coating material, a cured object of the adhesive coating material, an adhesive sheet obtained by being coated with adhesive coating material, and a solar cell module using the sheet. As a polyol component of the adhesive coating material which forms an adhesive layer b in a back sheet E of the solar cell module illustrated in Figure, a hydroxyl group-containing (meth)acrylic resin (I) and unsaturated double bond-containing polyester polyol (II) are used as essential components.Type: ApplicationFiled: February 25, 2016Publication date: November 16, 2017Applicant: DIC CORPORATIONInventors: Miho Takeda, Takatoshi Matsuo, Tatsuya Kouyama, Kan Takeuchi, Yasunobu Hirota
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Publication number: 20170088753Abstract: It is an object to provide a novel laminating adhesive to thereby allow provision of a laminating adhesive composition for a laminate that provides good adhesion between a metal layer and a plastic layer, has satisfactory moisture barrier properties, heat resistance, insulation properties, durability, etc., also exhibits electrolyte resistance even after low-temperature curing, and does not undergo delamination over time. A laminate that uses the laminating adhesive composition and a secondary battery are also provided. The object is achieved by a laminating adhesive containing a non-chlorine-based polyolefin resin (A), an epoxy compound (B), and an organic solvent (C) including a cyclic alkane compound as an essential ingredient and further including an ester-based solvent or an alcohol-based solvent. In the organic solvent (C), the ratio, in parts by mass, of the cyclic alkane compound to the solvent other than the cyclic alkane compound is within the range of 1/1 to 20/1.Type: ApplicationFiled: May 19, 2015Publication date: March 30, 2017Inventors: Hidemi Nakamura, Takatoshi Matsuo, Tatsuya Kouyama
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Patent number: 8114922Abstract: An ink comprises metal thin film fragments having an average thickness of 0.01 to 0.1 ?m and an average particle diameter of 5 to 25 ?m, and a binder resin having at least one selected from the group consisting of a carboxyl group, a phosphoric acid group, a sulfonic acid group, metal salts thereof and an amino group. A laminated sheet comprises multilaminated at least two synthetic resin films for molding, and a decorative layer having mirror-like metallic luster formed at any laminate interface of the synthetic resin films, the decorative layer being an ink film made of the ink, the ink film having a thickness of 0.05 to 2.0 ?m.Type: GrantFiled: December 25, 2003Date of Patent: February 14, 2012Assignee: DIC CorporationInventors: Masanobu Fukuda, Tatsuya Kouyama, Jun Takahashi, Kenkichi Yano
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Publication number: 20090220755Abstract: An ink comprises metal thin film fragments having an average thickness of 0.01 to 0.1 ?m and an average particle diameter of 5 to 25 ?m, and a binder resin having at least one selected from the group consisting of a carboxyl group, a phosphoric acid group, a sulfonic acid group, metal salts thereof and an amino group. A laminated sheet comprises multilaminated at least two synthetic resin films for molding, and a decorative layer having mirror-like metallic luster formed at any laminate interface of the synthetic resin films, the decorative layer being an ink film made of the ink, the ink film having a thickness of 0.05 to 2.0 ?m.Type: ApplicationFiled: December 25, 2003Publication date: September 3, 2009Applicant: Dainippon Ink and Chemicals, Inc.Inventors: Masanobu Fukuda, Tatsuya Kouyama, Jun Takahashi, Kenkichi Yano
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Patent number: 7553548Abstract: A laminated sheet for molding comprising: a film layer which comprises thermoplastic acrylic resin, wherein the film layer is one of transparent or translucent; an intermediate layer which comprises a curable resin including a polyisocyanate compound and an acrylic resin having hydroxyl groups, wherein the a curable resin is a cured material in a semi-cured state; and a decorative layer having a mirror-like metallic luster, which comprises a binder resin and fine metal grains obtained from a thin metal film; wherein the layers are laminated in the order stated.Type: GrantFiled: July 27, 2004Date of Patent: June 30, 2009Assignee: Dainippon Ink & Chemicals, Inc.Inventors: Masanobu Fukuda, Kouji Shiota, Tatsuya Kouyama, Kenkichi Yano
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Publication number: 20060240246Abstract: A laminated sheet for molding comprising: a film layer which comprises thermoplastic acrylic resin, wherein the film layer is one of transparent or translucent; an intermediate layer which comprises a curable resin including a polyisocyanate compound and an acrylic resin having hydroxyl groups, wherein the a curable resin is a cured material in a semi-cured state; and a decorative layer having a mirror-like metallic luster, which comprises a binder resin and fine metal grains obtained from a thin metal film; wherein the layers are laminated in the order stated.Type: ApplicationFiled: July 27, 2004Publication date: October 26, 2006Inventors: Masanobu Fukuda, Kouji Shiota, Tatsuya Kouyama, Kenkichi Yano