Patents by Inventor Yuichi Itou
Yuichi Itou 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: 20260133230Abstract: This anisotropic conductive sheet comprises: an insulation layer having an elastomer layer and a plurality of first heat-resistant resin layers disposed in a mutually separated manner on one side of the insulation layer; a plurality of through-holes disposed in the insulation layer; a plurality of conductive parts disposed on the respective inner wall surfaces of the plurality of through-holes; and a plurality of first conductive layers disposed on or above respective surfaces of the plurality of first heat-resistant resin layers and connected to the conductive parts. The plurality of through-holes are disposed at positions corresponding to the respective plurality of first heat-resistant resin layers. In a plan view of the insulation layer, the first conductive layers are located further to the inner side than the outer edge of the first heat-resistant resin layers.Type: ApplicationFiled: October 26, 2022Publication date: May 14, 2026Applicant: MITSUI CHEMICALS, INC.Inventors: Katsunori NISHIURA, Daisuke YAMADA, Yuichi ITOU, Masao HORI
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Publication number: 20260103836Abstract: Provided is a water dispersion that suppresses fuzz of a cut end surface of a carbon fiber bundle, can improve bundling properties of carbon fibers and ILSS of laminated bodies of UD sheets, and can be used as a carbon fiber sizing agent in a unidirectional material. The dispersion has a resin component that: includes an ethylene·?-olefin copolymer (A) or an acid modified product (B) thereof satisfying all of requirements (a1) to (a3); has a storage elastic modulus at 25° C. of 100-100,000 MPa or less; and is present in a ratio of 0.01-50 mass % or less. Requirements: (a1) the kinematic viscosity at 100° C. is 10-5,000 mm2/s; (a2) the content ratio of structural units derived from ethylene is 30-85 mol %; and (a3) the molecular weight distribution (Mw/Mn) of molecular weight obtained by polystyrene conversion measured by gel permeation chromatography (GPC) is 2.5 or less.Type: ApplicationFiled: September 26, 2023Publication date: April 16, 2026Applicants: MITSUI CHEMICALS, INC., FORMOSA PLASTICS CORPORATIONInventors: Shunya MIZUNO, Yuichi ITOU, Masahiro YANO, Sheng-Hsun LIN, Cheng-Chun CHOU, Yu-Sheng LI
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Publication number: 20240360562Abstract: The present invention addresses the problem of providing a method for manufacturing a plated composite material, the method being capable of forming a plating layer having good adhesiveness to each of a plurality of resin parts each including a different resin. The method for manufacturing a plated composite material for solving the aforementioned problem includes: a step for preparing a composite material having a heat-resistant resin part and a silicone resin part; a step for treating, with an alkaline solution, a plating region of the composite material; a step for irradiating plasma on the plating region; a step for bringing the plating region in contact with a cationic catalyst-containing liquid; and a step for performing an electroless plating treatment on the plating region. The plating region includes at least a portion of the heat-resistant resin part and at least a portion of the silicone resin part.Type: ApplicationFiled: June 30, 2022Publication date: October 31, 2024Applicant: MITSUI CHEMICALS, INC.Inventors: Masao HORI, Katsunori NISHIURA, Yuichi ITOU, Daisuke YAMADA
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Publication number: 20240219422Abstract: This anisotropic electroconductive sheet includes: an insulating layer having a first surface, a second surface, and a plurality of through-holes penetrating between the two surfaces; a plurality of electroconductive layers disposed on the inner wall surfaces of each of the plurality of through-holes; and a plurality of electroconductive fillers filled into cavities surrounded by the electroconductive layers inside each of the plurality of through-holes. Each of the plurality of electroconductive fillers contains a crosslinked product of an electroconductive elastomer composition containing electroconductive particles and an elastomer.Type: ApplicationFiled: June 30, 2022Publication date: July 4, 2024Applicant: MITSUI CHEMICALS, INC.Inventors: Katsunori NISHIURA, Daisuke YAMADA, Yuichi ITOU, Masao HORI
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Patent number: 11426977Abstract: Disclosed are a method for producing a laminate including a step of laminating a resin impregnated fiber reinforced composition layer on a metal member, wherein the method includes a step of forming a resin coating on the metal member and a step of laminating a resin impregnated fiber reinforced composition layer containing a resin impregnated fiber reinforced composition containing (I) 20 to 80% by mass of a polymer having a melting point and/or a glass transition temperature of 50 to 300° C., and (C) 20 to 80% by mass of a reinforcing fiber (provided that the sum of the component (I) and the component (C) is taken as 100% by mass) via the above resin coating; and a laminate obtained by the method.Type: GrantFiled: March 27, 2018Date of Patent: August 30, 2022Assignee: MITSUI CHEMICALS, INC.Inventors: Takeharu Isaki, Sunao Maeda, Masako Yoshida, Yuichi Itou, Kazuaki Kikuchi
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Patent number: 11407871Abstract: The present invention provides a new method by which polymers can be modified. The present invention provides a method for modifying a polymer including the step of: irradiating a reaction system containing a polymer with light to react the reaction system in a presence of a compound radical, wherein the compound radical is a radical containing one element selected from the group consisting of Group 15 elements and Group 16 elements, and a Group 17 element.Type: GrantFiled: December 16, 2017Date of Patent: August 9, 2022Assignees: Earth Corporation, Osaka UniversityInventors: Kiyoto Takamori, Kei Ohkubo, Tsuyoshi Inoue, Yasushi Mizuta, Yuichi Itou
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Patent number: 11038230Abstract: The present invention relates to a composition, a laminate, a packaging material, a battery case packaging material, and a battery, and the composition includes: a modified olefin polymer (A) that is a modified olefin polymer, the modified olefin polymer being a polymer (a) of a C2 to C20 ?-olefin modified by a monomer (b) having a functional group reactive with an epoxy group or an oxazoline group; a crosslinking agent (B) including at least one of an epoxy compound and an oxazoline compound; and a catalyst (C) having a pKa of 11 or more, the modified olefin polymer (A) satisfying the following requirements (i) and (ii): Requirement (i): the polymer (a) contains a structural unit derived from a C4 to C20 ?-olefin, and Requirement (ii): a heat of fusion of the polymer (A), as measured according to JIS K7122, is 0 to 50 J/g.Type: GrantFiled: January 18, 2017Date of Patent: June 15, 2021Assignee: MITSUI CHEMICALS, INC.Inventors: Yoshihito Hirota, Yuichi Itou
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Publication number: 20210114349Abstract: Disclosed are a method for producing a laminate including a step of laminating a resin impregnated fiber reinforced composition layer on a metal member, wherein the method includes a step of forming a resin coating on the metal member and a step of laminating a resin impregnated fiber reinforced composition layer containing a resin impregnated fiber reinforced composition containing (I) 20 to 80% by mass of a polymer having a melting point and/or a glass transition temperature of 50 to 300° C., and (C) 20 to 80% by mass of a reinforcing fiber (provided that the sum of the component (I) and the component (C) is taken as 100% by mass) via the above resin coating; and a laminate obtained by the method.Type: ApplicationFiled: March 27, 2018Publication date: April 22, 2021Applicant: Mitsui Chemicals, Inc.Inventors: Takeharu ISAKI, Sunao MAEDA, Masako YOSHIDA, Yuichi ITOU, Kazuaki KIKUCHI
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Patent number: 10899896Abstract: Disclosed are: a reinforcing fiber bundle with excellent mechanical property and handling property, which contains a propylene-based resin (A), a propylene-based resin (B) comprising at least a carboxylic acid salt bonded to the polymer chain, and a reinforcing fiber (C) wherein the propylene-based resin (A) comprises more than 70% by mass but not more than 100% by mass of a component (A-1) having a weight average molecular weight of 150,000 or more, the amount of the propylene-based resin (B) is 3 to 50 parts by mass per 100 parts by mass of the propylene-based resin (A), and the total content rate of the propylene-based resin (A) and the propylene-based resin (B) is 0.3 to 5% by mass in the whole reinforcing fiber bundle; and a molding material comprising the reinforcing fiber bundle and a matrix resin.Type: GrantFiled: April 19, 2017Date of Patent: January 26, 2021Assignee: MITSUI CHEMICALS, INC.Inventors: Yasushi Mizuta, Takeharu Isaki, Masako Yoshida, Yuichi Itou
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Publication number: 20190315936Abstract: The present invention provides a new method by which polymers can be modified. The present invention provides a method for modifying a polymer including the step of: irradiating a reaction system containing a polymer with light to react the reaction system in a presence of a compound radical, wherein the compound radical is a radical containing one element selected from the group consisting of Group 15 elements and Group 16 elements, and a Group 17 element.Type: ApplicationFiled: December 16, 2017Publication date: October 17, 2019Inventors: Kiyoto TAKAMORI, Kei OHKUBO, Tsuyoshi INOUE, Yasushi MIZUTA, Yuichi ITOU
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Publication number: 20190135995Abstract: Disclosed are: a reinforcing fiber bundle with excellent mechanical property and handling property, which contains a propylene-based resin (A), a propylene-based resin (B) comprising at least a carboxylic acid salt bonded to the polymer chain, and a reinforcing fiber (C) wherein the propylene-based resin (A) comprises more than 70% by mass but not more than 100% by mass of a component (A-1) having a weight average molecular weight of 150,000 or more, the amount of the propylene-based resin (B) is 3 to 50 parts by mass per 100 parts by mass of the propylene-based resin (A), and the total content rate of the propylene-based resin (A) and the propylene-based resin (B) is 0.3 to 5% by mass in the whole reinforcing fiber bundle; and a molding material comprising the reinforcing fiber bundle and a matrix resin.Type: ApplicationFiled: April 19, 2017Publication date: May 9, 2019Applicant: MITSUI CHEMICALS, INC.Inventors: Yasushi MIZUTA, Takeharu ISAKI, Masako YOSHIDA, Yuichi ITOU
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Publication number: 20190036090Abstract: The present invention relates to a composition, a laminate, a packaging material, a battery case packaging material, and a battery, and the composition includes: a modified olefin polymer (A) that is a modified olefin polymer, the modified olefin polymer being a polymer (a) of a C2 to C20 ?-olefin modified by a monomer (b) having a functional group reactive with an epoxy group or an oxazoline group; a crosslinking agent (B) including at least one of an epoxy compound and an oxazoline compound; and a catalyst (C) having a pKa of 11 or more, the modified olefin polymer (A) satisfying the following requirements (i) and (ii): Requirement (i): the polymer (a) contains a structural unit derived from a C4 to C20 ?-olefin, and Requirement (ii): a heat of fusion of the polymer (A), as measured according to JIS K7122, is 0 to 50 J/g.Type: ApplicationFiled: January 18, 2017Publication date: January 31, 2019Inventors: Yoshihito HIROTA, Yuichi ITOU
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Patent number: 10184072Abstract: An object of the present invention is to provide a coating agent giving a coating film that has good adhesion and stability over time, a decorative film having at least one layer formed from the coating agent; and an article decorated with the decorative film. The coating agent of the present invention contains, in a specific ratio, an olefin polymer (A) having a heat of fusion of in the range of 0 to 50 J/g and having a weight average molecular weight (Mw) as measured by GPC of 1×104 to 1000×104, a hydrocarbon-based synthetic oil (B) having a 40° C. kinematic viscosity of 30 to 500,000 cSt, and a tackifier (C) having an acid value of 10 or more and having a weight average molecular weight (Mw) of 0.9×103 to 3×103.Type: GrantFiled: November 13, 2015Date of Patent: January 22, 2019Assignee: MITSUI CHEMICALS, INC.Inventors: Yoshihito Hirota, Yuichi Itou
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Publication number: 20170321093Abstract: An object of the present invention is to provide a coating agent giving a coating film that has good adhesion and stability over time, a decorative film having at least one layer formed from the coating agent; and an article decorated with the decorative film. The coating agent of the present invention contains, in a specific ratio, an olefin polymer (A) having a heat of fusion of in the range of 0 to 50 J/g and having a weight average molecular weight (Mw) as measured by GPC of 1×104 to 1000×104, a hydrocarbon-based synthetic oil (B) having a 40° C. kinematic viscosity of 30 to 500,000 cSt, and a tackifier (C) having an acid value of 10 or more and having a weight average molecular weight (Mw) of 0.9×103 to 3×103.Type: ApplicationFiled: November 13, 2015Publication date: November 9, 2017Applicant: Mitsui Chemicals, Inc.Inventors: Yoshihito HIROTA, Yuichi ITOU
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Patent number: 9209462Abstract: A lithium-ion secondary battery with excellent durability is provided using a two-phase coexisting compound as a positive electrode active material. This lithium-ion secondary battery is provided with an electrode body having a positive electrode containing a positive electrode active material and a negative electrode containing a negative electrode active material, and a non-aqueous electrolyte solution containing a lithium salt in an organic solvent. The positive electrode active material is mainly composed of a two-phase coexisting compound containing lithium, and also contains particles of a lithium-transition metal oxide with a layered structure. The particles of the layered oxide have an average particle diameter of 2 ?m or less, and the percentage content thereof in the positive electrode active material is 5 mass % or less.Type: GrantFiled: September 14, 2010Date of Patent: December 8, 2015Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Tomitaro Hara, Akira Tsujiko, Sachie Yuasa, Takahito Imamine, Tsuyoshi Sasaki, Yuichi Itou, Youji Takeuchi, Osamu Hiruta, Chikaaki Okuda, Mamoru Mizutani, Hiroshi Sawada
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Patent number: 9184446Abstract: A lithium ion secondary battery provided by the present invention has a positive electrode having a current collector and a positive electrode composite layer provided on the current collector. The current collector contains a metal element A as a main component thereof. The positive electrode composite layer contains a two-phase compound containing lithium as a positive electrode active material. The positive electrode composite layer also contains as an additive a compound having a metal element B, in a composition thereof, that has a higher ionization tendency than the metal element A.Type: GrantFiled: October 13, 2009Date of Patent: November 10, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tomitaro Hara, Akira Tsujiko, Sachie Yuasa, Takahito Imamine, Yuichi Itou, Hiroshi Sawada, Chikaaki Okuda, Osamu Hiruta, Mamoru Mizutani
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Patent number: 8507130Abstract: The present invention provides a water based lithium secondary battery that can inhibit deteriorations in capacity owing to charge-and-discharge operations and maintain a high capacity even after it is charged and discharged repeatedly. The water based lithium secondary battery includes a positive electrode, a negative electrode, a separator 4 sandwiched between these, and an aqueous electrolyte solution obtained by dissolving an electrolyte made of a lithium salt in a water based solvent. As the water based solvent, a pH buffer solution is employed. The buffer solution is obtained by dissolving an acid and its conjugate base's salt, a base and its conjugate acid's salt, a salt made from a weak acid and a strong base, a salt made from a weak base and a strong acid, or a salt made from a weak acid and a weak base in water.Type: GrantFiled: June 30, 2008Date of Patent: August 13, 2013Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Hiroki Kondo, Tsuyoshi Sasaki, Osamu Hiruta, Yuichi Itou, Chikaaki Okuda, Youji Takeuchi, Yoshio Ukyo
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Publication number: 20130059199Abstract: A lithium-ion secondary battery with excellent durability is provided using a two-phase coexisting compound as a positive electrode active material. This lithium-ion secondary battery is provided with an electrode body having a positive electrode containing a positive electrode active material and a negative electrode containing a negative electrode active material, and a non-aqueous electrolyte solution containing a lithium salt in an organic solvent. The positive electrode active material is mainly composed of a two-phase coexisting compound containing lithium, and also contains particles of a lithium-transition metal oxide with a layered structure. The particles of the layered oxide have an average particle diameter of 2 ?m or less, and the percentage content thereof in the positive electrode active material is 5 mass % or less.Type: ApplicationFiled: September 14, 2010Publication date: March 7, 2013Inventors: Tomitaro Hara, Akira Tsujiko, Sachie Yuasa, Takahito Imamine, Tsuyoshi Sasaki, Yuichi Itou, Youji Takeuchi, Osamu Hiruta, Chikaaki Okuda, Mamoru Mizutani, Hiroshi Sawada
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Publication number: 20130045417Abstract: A lithium ion secondary battery provided by the present invention has a positive electrode having a current collector and a positive electrode composite layer provided on the current collector. The current collector contains a metal element A as a main component thereof. The positive electrode composite layer contains a two-phase compound containing lithium as a positive electrode active material. The positive electrode composite layer also contains as an additive a compound having a metal element B, in a composition thereof, that has a higher ionization tendency than the metal element A.Type: ApplicationFiled: October 13, 2009Publication date: February 21, 2013Applicant: Toyota Jidosha Kabushiki KaishaInventors: Tomitaro Hara, Akira Tsujiko, Sachie Yuasa, Takahito Imamine, Yuichi Itou, Hiroshi Sawada, Chikaaki Okuda, Osamu Hiruta, Mamoru Mizutani
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Publication number: 20100136427Abstract: The present invention provides a water based lithium secondary battery that can inhibit deteriorations in capacity owing to charge-and-discharge operations and maintain a high capacity even after it is charged and discharged repeatedly. The water based lithium secondary battery includes a positive electrode, a negative electrode, a separator sandwiched between these, and an aqueous electrolyte solution obtained by dissolving an electrolyte made of a lithium salt in a water based solvent. As the water based solvent, a pH buffer solution is employed. The buffer solution is obtained by dissolving an acid and its conjugate base's salt, a base and its conjugate acid's salt, a salt made from a weak acid and a strong base, a salt made from a weak base and a strong acid, or a salt made from a weak acid and a weak base in water.Type: ApplicationFiled: June 30, 2008Publication date: June 3, 2010Applicant: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Hiroki Kondo, Tsuyoshi Sasaki, Osamu Hiruta, Yuichi Itou, Chikaaki Okuda, Youji Takeuchi, Yoshio Ukyo