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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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
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Patent number: 7675291Abstract: A battery characteristic detecting method according to the invention includes a first step in which constant current discharge from a battery is performed at a predetermined current value, and a voltage during constant current discharge is measured; a second step in which overpotential for mass transfer control in the battery or resistance for the mass transfer control in the battery is calculated based on the voltage measured in the first step; and a third step in which a determination that a characteristic change has occurred in the battery is made, when the overpotential for the mass transfer control in the battery or the resistance for the mass transfer control in the battery calculated in the second step is larger than a predetermined threshold value.Type: GrantFiled: August 18, 2004Date of Patent: March 9, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Hidehito Matsuo, Tetsuro Kobayashi, Yuichi Itou, Yasuhito Kondo, Yoshio Ukyo, Yoshiaki Kikuchi, Motoyoshi Okumura
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Publication number: 20080274405Abstract: The present invention is to provide a cathode active material for an alkaline battery with a lamellar crystal structure including nickel oxyhydroxide. The cathode active material has a diffraction peak at a position that ranges from 8.4 degrees to 10.4 degrees in diffraction angle 2? by X-ray diffraction using CuK?-rays. In addition, the present invention provides an alkaline battery having a cathode having a cathode active material, an anode having an anode active material, and an alkaline water solution as an electrolytic solution. Furthermore, the present invention provides a manufacturing method for a cathode active material for an alkaline battery with a lamellar crystal structure including nickel oxyhydroxide. The manufacturing method has an oxidation process for manufacturing the cathode active material by oxidizing a starting material made from ?-type nickel hydroxide with a lamellar crystal structure in an airstream including alkaline water solution or alkali.Type: ApplicationFiled: May 30, 2005Publication date: November 6, 2008Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuro Kobayashi, Yasuhito Kondo, Hidehito Matsuo, Tsuyoshi Sasaki, Yuichi Itou, Hiroshi Nozaki, Takamasa Nonaka, Yoshiki Seno, Yoshio Ukyo, Masanori Ito
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Publication number: 20080254366Abstract: An alkaline storage battery 1 has: a cathode 2 containing ?-type nickel hydroxide and/or ?-type nickel oxyhydroxide as a cathode active material; an anode 3 containing an anode active material; and an alkaline aqueous solution as an electrolytic solution 4. The alkaline storage battery 1 is configured to restrain at least part of a crystal structure of the cathode active material from changing due to charging or discharging and to restrain the cathode active material from exhibiting a new diffraction peak at a position that ranges from 8.4 degrees to 10.4 degrees in X-ray diffraction angle 2? by X-ray diffraction using CuK?-rays. It is preferable that an anion-exchange membrane layer 25 should be provided on a surface of the cathode 2.Type: ApplicationFiled: May 30, 2005Publication date: October 16, 2008Inventors: Tetsuro Kobayashi, Yasuhito Kondo, Hidehito Matsuo, Tsuyoshi Sasaki, Yuichi Itou, Hiroshi Nozaki, Takamasa Nonaka, Yoshiki Seno, Yoshio Ukyo, Masanori Ito
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Publication number: 20080161471Abstract: Provided is a resin composition for sealing material containing 0.1 to 150 parts by weight of a curing agent (B) and 1 to 500 parts by weight of boehmite fine particles (C), based on 100 parts by weight of a compound (A) having polymerizable cyclic ether. Further provided according to the invention is a resin composition for sealing material having excellent water vapor permeation resistance and a sealing material for electroluminescence using the same.Type: ApplicationFiled: February 10, 2006Publication date: July 3, 2008Applicant: Mitsui Chemicals, Inc.Inventors: Yugo Yamamoto, Yuichi Itou