Patents by Inventor Satoshi Mihara
Satoshi Mihara 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: 20230220070Abstract: The present invention addresses the problem of providing a novel therapeutic agent for treating patients with anti NMDAR encephalitis. Patients with an anti NMDAR encephalitis have a pathogenic anti-human NR1 antibody that induces internalization of NMDAR on cell surface. As a result, NMDAR function is weakened in the patients' brain. The present inventors found that the one-armed anti-human NR1 antibody according to the present invention binds to NR1 competitively with the pathogenic anti-human NR1 antibody and inhibits the internalization of NMDAR by the pathogenic anti-human NR1 antibody to thereby exhibit therapeutic effect on anti NMDAR encephalitis.Type: ApplicationFiled: November 17, 2022Publication date: July 13, 2023Inventors: Satoshi KUBO, Atsuo KANNO, Daisuke YAMAJUKU, Takuya KITO, Masashi MAEDA, Takuma MIHARA
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Patent number: 11685190Abstract: A rubber composition for a tire according to an embodiment of the present technology includes: 100 parts by mass of a diene rubber and from 1 to 30 parts by mass of a thermally expandable microcapsule composite body, and the thermally expandable microcapsule composite body contains one or more thermally expandable microcapsules and an acrylonitrile butadiene copolymer and/or a crosslinked body thereof covering the one or more thermally expandable microcapsules.Type: GrantFiled: March 19, 2019Date of Patent: June 27, 2023Assignee: The Yokohama Rubber Co., Ltd.Inventors: Hirokazu Kageyama, Kazushi Kimura, Satoshi Mihara, Yutaro Yamamoto
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Patent number: 11608425Abstract: A rubber composition for a tire contains a diene rubber, silica, and a specific modified butadiene polymer, wherein the diene rubber contains an aromatic vinyl-conjugated diene rubber A and at least one rubber component B selected from an aromatic vinyl-conjugated diene rubber b1 other than the rubber A and a butadiene rubber b2 having a weight average molecular weight of ?15000. A content of the aromatic vinyl-conjugated diene rubber A is from 30 to 90% by mass, and a content of the rubber component B is from 10 to 70% by mass, an average TG of the diene rubber is lower than ?20° C., a content of the silica is from 80 to 200 parts by mass per 100 parts by mass of the diene rubber, and a content of the modified butadiene polymer is from 1.0 to 25.0% by mass with respect to content of the silica.Type: GrantFiled: October 4, 2018Date of Patent: March 21, 2023Assignee: The Yokohama Rubber Co., Ltd.Inventors: Ayaki Kazariya, Makoto Ashiura, Satoshi Mihara, Kazuya Uenishi, Yu Shinke
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Patent number: 11413905Abstract: The present technology provides a tire rubber composition formed by blending a microparticle composite, which is formed from a solid component of a mixture containing an emulsion of an organic microparticle and a rubber latex, in a sulfur vulcanizable rubber; the emulsion of the organic microparticle being an emulsion containing a microparticle obtained by polymerizing and/or crosslinking at least one selected from the group consisting of polymerizable monomers, and oligomers, prepolymers, and polymers having a reactive functional group and having a molecular weight from 500 to 50000 simultaneously or stepwise in water; and an average particle size of the microparticle being from 0.001 to 100 ?m.Type: GrantFiled: May 18, 2017Date of Patent: August 16, 2022Assignee: The Yokohama Rubber Co., LTD.Inventors: Hirokazu Kageyama, Kazushi Kimura, Genichiro Shimada, Satoshi Mihara
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Patent number: 11180641Abstract: Provided is a rubber composition including: (i) a sulfur vulcanizable elastomer, (ii) carbon black and/or a white filler, and (iii) a microparticle having a three-dimensionally crosslinked structure; the microparticle being a microparticle obtained by three-dimensionally crosslinking a polymer formed from an oligomer or prepolymer that has a sulfide bond formed from two or more sulfur atoms in a main chain and/or that has a thiol group.Type: GrantFiled: February 22, 2017Date of Patent: November 23, 2021Inventors: Kazushi Kimura, Hirokazu Kageyama, Satoshi Mihara
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Patent number: 11180634Abstract: The present invention provides a rubber composition for a tire, the rubber composition containing: a diene rubber; silica; and a heterocyclic compound (where, the heterocyclic compound does not have a silicon atom) having a hydrocarbon group having from 3 to 30 carbons and at least one type of heterocycle selected from the group consisting of a piperazine ring, a morpholine ring, and a thiomorpholine ring; an average glass transition temperature of the diene rubber being ?50° C. or higher; a content of the silica being from 80 to 200 parts by mass per 100 parts by mass of the diene rubber; and a content of the heterocyclic compound being from 0.5 to 20% by mass with respect to the content of the silica. Such rubber composition has excellent processability, exhibits excellent wet grip performance and has low rolling resistance when the rubber composition is formed into a tire.Type: GrantFiled: September 10, 2018Date of Patent: November 23, 2021Assignee: The Yokohama Rubber Co., Ltd.Inventors: Ayaki Kazariya, Makoto Ashiura, Satoshi Mihara, Kazushi Kimura, Hirokazu Kageyama
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Patent number: 11040572Abstract: A rubber composition for a tire contains 100 parts by mass of a diene rubber (A) and from 1 to 60 parts by mass of an organic microparticle (B); an average particle size of the organic microparticle (B) being from 0.001 to 100 ?m, the organic microparticle (B) having a complex structure composed of a compatible component that is compatible with the diene rubber (A) and an incompatible component that is not compatible with the diene rubber (A), the complex structure having an inner part in which an amount of the incompatible component is greater than an amount of compatible component, and an outer part which covers at least a part of the inner part and in which the amount of the compatible component is greater than an amount of the incompatible component. A pneumatic tire including such rubber composition has a desirable elongation, rigidity, durability, and wear resistance.Type: GrantFiled: August 26, 2016Date of Patent: June 22, 2021Assignee: The Yokohama Rubber Co., Ltd.Inventors: Kazushi Kimura, Hirokazu Kageyama, Satoshi Mihara
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Patent number: 11008445Abstract: The present invention is to provide an aromatic vinyl-diene copolymer which exhibits excellent mechanical properties and wear resistance when being formed into a tire, a method for producing the aromatic vinyl-diene copolymer, and a rubber composition containing the aromatic vinyl-diene copolymer. The aromatic vinyl-diene copolymer of an embodiment of the present invention is an aromatic vinyl-diene copolymer which is a copolymer of an aromatic vinyl and a diene, wherein the content of a repeating unit derived from an aromatic vinyl is 18 mass % or greater, among repeating units derived from a diene, a proportion of a vinyl structure is 8 mol % or less, a proportion of a 1,4-trans structure is 75 mol % or less, and a proportion of a 1,4-cis structure is from 17 to 90 mol %, and a glass transition temperature is ?60° C. or lower.Type: GrantFiled: February 10, 2017Date of Patent: May 18, 2021Assignee: The Yokohama Rubber Co., Ltd.Inventors: Kazuya Uenishi, Makoto Ashiura, Motoji Fujita, Naoya Amino, Satoshi Mihara, Yu Shinke
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Patent number: 11001654Abstract: The present invention is to provide a diene polymer that exhibits excellent low rolling resistance when used in a tire, a method for producing the diene polymer, and a rubber composition containing the diene polymer. The diene polymer of an embodiment of the present invention is produced by polymerizing a monomer containing at least a diene monomer by using an initiator prepared from an organolithium compound, an alkyl aluminum, and a metal alcoholate, and then terminating the polymerization by using an electrophile selected from the group consisting of titanium halides, tin halides, cyclic silazanes, alkoxysilanes, epoxides, amines, ketones, and compounds represented by Formula (N) below.Type: GrantFiled: September 8, 2016Date of Patent: May 11, 2021Assignee: The Yokohama Rubber Co., Ltd.Inventors: Kazuya Uenishi, Naoya Amino, Makoto Ashiura, Motoji Fujita, Satoshi Mihara, Yu Shinke
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Publication number: 20210047501Abstract: The present technology provide a rubber composition including: 100 parts by mass of a diene rubber, from 30 to 100 parts by mass of carbon black and/or a white filler, from 1 to 20 parts by mass of silicone-based microparticles that have an average particle size from 5 to 500 um and that are three-dimensionally crosslinked, from 0.1 to 10 parts by mass of a nonionic surfactant, and from 1 to 20 parts by mass of thermally expanding microcapsules.Type: ApplicationFiled: March 11, 2019Publication date: February 18, 2021Inventors: Hirokazu Kageyama, Kazushi Kimura, Satoshi Mihara, Yutaro Yamamoto
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Publication number: 20210023880Abstract: A rubber composition for a tire according to an embodiment of the present technology includes: 100 parts by mass of a diene rubber and from 1 to 30 parts by mass of a thermally expandable microcapsule composite body, and the thermally expandable microcapsule composite body contains one or more thermally expandable microcapsules and an acrylonitrile butadiene copolymer and/or a crosslinked body thereof covering the one or more thermally expandable microcapsules.Type: ApplicationFiled: March 19, 2019Publication date: January 28, 2021Inventors: Hirokazu Kageyama, Kazushi Kimura, Satoshi Mihara, Yutaro Yamamoto
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Publication number: 20200325310Abstract: A rubber composition for a tire contains a diene rubber, silica, and a specific modified butadiene polymer, wherein the diene rubber contains an aromatic vinyl-conjugated diene rubber A and at least one rubber component B selected from an aromatic vinyl-conjugated diene rubber b1 other than the rubber A and a butadiene rubber b2 having a weight average molecular weight of ?15000. A content of the aromatic vinyl-conjugated diene rubber A is from 30 to 90% by mass, and a content of the rubber component B is from 10 to 70% by mass, an average TG of the diene rubber is lower than ?20° C., a content of the silica is from 80 to 200 parts by mass per 100 parts by mass of the diene rubber, and a content of the modified butadiene polymer is from 1.0 to 25.0% by mass with respect to content of the silica.Type: ApplicationFiled: October 4, 2018Publication date: October 15, 2020Inventors: Ayaki KAZARIYA, Makoto ASHIURA, Satoshi MIHARA, Kazuya UENISHI, Yu SHINKE
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Publication number: 20200316995Abstract: The present technology provides a tire rubber composition formed by blending a microparticle composite, which is formed from a solid component of a mixture containing an emulsion of an organic microparticle and a rubber latex, in a sulfur vulcanizable rubber; the emulsion of the organic microparticle being an emulsion containing a microparticle obtained by polymerizing and/or crosslinking at least one selected from the group consisting of polymerizable monomers, and oligomers, prepolymers, and polymers having a reactive functional group and having a molecular weight from 500 to 50000 simultaneously or stepwise in water; and an average particle size of the microparticle being from 0.001 to 100 ?m.Type: ApplicationFiled: May 19, 2016Publication date: October 8, 2020Inventors: Hirokazu Kageyama, Kazushi Kimura, Genichiro Shimada, Satoshi Mihara
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Patent number: 10781300Abstract: Provided is a rubber composition containing from 1 to 50 parts by mass of an organic microparticle having an average particle size of 0.001 to 100 ?m and having a crosslinked structure per 100 parts by mass of a diene rubber, the organic microparticle being a crosslinked microparticle of a copolymer formed from at least two types of segments having repeating units that are different each other, the at least two types of segments being formed from an oligomer or prepolymer having a functional group and having a molecular weight of 500 to 20000, and the functional group forming a crosslinked structure between the at least two types of segments.Type: GrantFiled: February 9, 2017Date of Patent: September 22, 2020Assignee: The Yokohama Rubber Co., LTD.Inventors: Kazushi Kimura, Satoshi Mihara, Hirokazu Kageyama
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Publication number: 20200270420Abstract: The present invention provides a rubber composition for a tire, the rubber composition containing: a diene rubber; silica; and a heterocyclic compound (where, the heterocyclic compound does not have a silicon atom) having a hydrocarbon group having from 3 to 30 carbons and at least one type of heterocycle selected from the group consisting of a piperazine ring, a morpholine ring, and a thiomorpholine ring; an average glass transition temperature of the diene rubber being ?50° C. or higher; a content of the silica being from 80 to 200 parts by mass per 100 parts by mass of the diene rubber; and a content of the heterocyclic compound being from 0.5 to 20% by mass with respect to the content of the silica. Such rubber composition has excellent processability, exhibits excellent wet grip performance and has low rolling resistance when the rubber composition is formed into a tire.Type: ApplicationFiled: September 10, 2018Publication date: August 27, 2020Inventors: Ayaki KAZARIYA, Makoto ASHIURA, Satoshi MIHARA, Kazushi KIMURA, Hirokazu KAGEYAMA
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Patent number: 10710407Abstract: The present invention provides: a rubber composition for tires which has excellent processability and has excellent low heat build-up when formed into a tire; and a pneumatic tire using the same. The rubber composition for tires of the present invention is a rubber composition for tires, the rubber composition containing a diene rubber (A) and a microparticle (B), a vinyl group content of the diene rubber (A) being from 5 to 35 mass %, the microparticle (B) being a mercapto group-containing organic microparticle in which a crosslinkable oligomer or polymer (b1) is crosslinked, an average particle size of the microparticle (B) being from 1 to 200 ?m, and a content of the microparticle (B) being from 1 to 55 parts by mass per 100 parts by mass of the diene rubber (A).Type: GrantFiled: July 22, 2016Date of Patent: July 14, 2020Assignee: The Yokohama Rubber Co., Ltd.Inventors: Satoshi Mihara, Kazushi Kimura, Hirokazu Kageyama
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Patent number: 10589576Abstract: A studded tire includes stud pins embedded in a road contact surface of a tread portion 1; the rubber composition forming the tread portion containing at least one of natural rubber, styrene-butadiene rubber, and butadiene rubber, from 5 to 50 parts by weight of carbon black and from 5 to 70 parts by weight of silica per 100 parts by weight of the diene rubber; a nitrogen adsorption specific surface area of the carbon black being from 50 to 120 m2/g; a CTAB specific surface area of the silica being from 80 to 190 m2/g; a rubber hardness of the rubber composition being not greater than 60; and a product of a stress at the time of 400% elongation and a bottom surface area of a flange portion on a bottom side of the stud pins being not less than 400 MPa·mm2 and not greater than 850 MPa·mm2.Type: GrantFiled: March 31, 2015Date of Patent: March 17, 2020Assignee: The Yokohama Rubber Co., Ltd.Inventors: Keisuke Maejima, Satoshi Mihara
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Publication number: 20190062536Abstract: Provided is a rubber composition including: (i) a sulfur vulcanizable elastomer, (ii) carbon black and/or a white filler, and (iii) a microparticle having a three-dimensionally crosslinked structure; the microparticle being a microparticle obtained by three-dimensionally crosslinking a polymer formed from an oligomer or prepolymer that has a sulfide bond formed from two or more sulfur atoms in a main chain and/or that has a thiol group.Type: ApplicationFiled: February 22, 2017Publication date: February 28, 2019Applicant: The Yokohama Rubber Co., LTD.Inventors: Kazushi Kimura, Hirokazu Kageyama, Satoshi Mihara
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Publication number: 20190048174Abstract: Provided is a rubber composition containing from 1 to 50 parts by mass of an organic microparticle having an average particle size of 0.001 to 100 ?m and having a crosslinked structure per 100 parts by mass of a diene rubber, the organic microparticle being a crosslinked microparticle of a copolymer formed from at least two types of segments having repeating units that are different each other, the at least two types of segments being formed from an oligomer or prepolymer having a functional group and having a molecular weight of 500 to 20000, and the functional group forming a crosslinked structure between the at least two types of segments.Type: ApplicationFiled: February 9, 2017Publication date: February 14, 2019Inventors: Kazushi Kimura, Satoshi Mihara, Hirokazu Kageyama
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Publication number: 20190023880Abstract: The present invention is to provide an aromatic vinyl-diene copolymer which exhibits excellent mechanical properties and wear resistance when being formed into a tire, a method for producing the aromatic vinyl-diene copolymer, and a rubber composition containing the aromatic vinyl-diene copolymer. The aromatic vinyl-diene copolymer of an embodiment of the present invention is an aromatic vinyl-diene copolymer which is a copolymer of an aromatic vinyl and a diene, wherein the content of a repeating unit derived from an aromatic vinyl is 18 mass % or greater, among repeating units derived from a diene, a proportion of a vinyl structure is 8 mol % or less, a proportion of a 1,4-trans structure is 75 mol % or less, and a proportion of a 1,4-cis structure is from 17 to 90 mol %, and a glass transition temperature is ?60° C. or lower.Type: ApplicationFiled: February 10, 2017Publication date: January 24, 2019Applicant: THE YOKOHAMA RUBBER CO., LTD.Inventors: Kazuya UENISHI, Makoto ASHIURA, Motoji FUJITA, Naoya AMINO, Satoshi MIHARA, Yu SHINKE