Patents by Inventor Takumi Toda
Takumi Toda 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: 20240139716Abstract: Provided is an exhaust gas purification catalyst providing a catalyst performance and an OSC performance at the same time even at low temperature. The present disclosure relates to an exhaust gas purification catalyst including a substrate and a catalyst coating layer coated on the substrate. The catalyst coating layer includes a first catalyst coating layer containing Pd and/or Pt and a second catalyst coating layer containing Rh. The first catalyst coating layer is formed from an end portion in an upstream side with respect to an exhaust gas flow direction in the exhaust gas purification catalyst. The second catalyst coating layer includes an upstream coating layer and a downstream coating layer. Rh in the upstream coating layer and the downstream coating layer are supported on specific carrier particles. Further, a particle diameter of Rh is controlled.Type: ApplicationFiled: October 17, 2023Publication date: May 2, 2024Applicants: Toyota Jidosha Kabushiki Kaisha, Cataler CorporationInventors: Takahiro NISHIO, Nobuyuki Takagl, Takumi Tojo, Shogo Shirakawa, Kengo Shimizu, Sho Hoshino, Shun Sakamoto, Yosuke Toda
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Publication number: 20240052067Abstract: Provided is a desulfurized rubber capable of producing a crosslinked rubber having an excellent mechanical strength. The desulfurized rubber contains a solvent-soluble rubber component A having a weight-average molecular weight of more than 260,000 and less than 600,000, and a solvent-insoluble rubber component B, wherein the content ratio of the rubber component B is less than 45% by mass of the total mass of the content a of the rubber component A and the content b of the rubber component B.Type: ApplicationFiled: October 15, 2021Publication date: February 15, 2024Inventors: Masayuki TANIGUCHI, Takumi TODA
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Publication number: 20230374164Abstract: Provided are a liquid hydrocarbon production method for obtaining a liquid hydrocarbon-containing rubber composition, including heating a crosslinked rubber at 300° C. or lower in a reaction solvent that contains an aldehyde having a hydrocarbon group with 2 or more carbon atoms and having a boiling point of 230° C. or lower; as well as a re-crosslinked rubber obtained from the rubber composition produced in the production method, and a tire and a rubber industrial product. According to the liquid hydrocarbon production method, a liquid hydrocarbon having a higher molecular weight can be produced at a high decomposition proportion even under mild conditions.Type: ApplicationFiled: October 15, 2021Publication date: November 23, 2023Applicant: BRIDGESTONE CORPORATIONInventors: Masayuki TANIGUCHI, Takumi TODA
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Publication number: 20200190293Abstract: An object of the present disclosure is to provide a rubber composition having satisfactorily low hysteresis loss, while maintaining high wear resistance. In order to achieve the object, a rubber composition contains: a rubber component having diene-based rubber therein; and a tetrazine compound.Type: ApplicationFiled: April 4, 2018Publication date: June 18, 2020Applicant: BRIDGESTONE CORPORATIONInventors: Takumi TODA, Kenta ISHIBASHI, Hidenobu AKAHANE, Seiichi TAHARA, Ryota SONE
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Publication number: 20190202238Abstract: Provided is a rubber member that can, when used in a rubber article such as a tire, improve the on-ice performance of the rubber article. A rubber member comprises a nanomaterial, wherein the nanomaterial has a major axis of less than 100 nm in the case of being non-fibrous or a minor axis length of less than 100 nm and a major axis length of less than 1000 nm in the case of being fibrous, and has a content of a polar group of 100 mg/kg or more.Type: ApplicationFiled: July 26, 2017Publication date: July 4, 2019Applicant: BRIDGESTONE CORPORATIONInventors: Saaya SHIONO, Takumi TODA, Makoto HASHIGUCHI
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Publication number: 20190202237Abstract: Provided is a rubber member that can, when used in a rubber article such as a tire, improve the on-ice performance of the rubber article. A first rubber member comprises a water thickening material, wherein a plurality of minute recesses are formed on a surface of the rubber member, the water thickening material is provided on an inner surface of one or more minute recesses of the plurality of minute recesses, an average coverage of the water thickening material on the inner surface of the one or more minute recesses is 10% or more, and the water thickening material satisfies a condition that, when an aqueous dispersion is prepared with a concentration of the water thickening material being 23 mass %, a viscosity of the aqueous dispersion at 25° C. and any shearing velocity of 0.01/s to 0.1/s measured by a cone-plate viscometer is 20 Pa·s or more.Type: ApplicationFiled: August 2, 2017Publication date: July 4, 2019Applicant: BRIDGESTONE CORPORATIONInventors: Saaya SHIONO, Makoto HASHIGUCHI, Takumi TODA
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Patent number: 9951197Abstract: The present invention relates to a method for producing a rubber composition obtained by compounding a rubber component (A) containing at least one kind selected from natural rubber and synthetic diene rubber, a filler containing an inorganic filler (B), a silane coupling agent (C), and thiourea, the method comprising kneading the rubber composition in plural stages, the rubber component (A), the whole or a part of the inorganic filler (B), the whole or a part of the silane coupling agent (C), and the thiourea being kneaded in the first stage of kneading, and thus provides a method for producing a rubber composition excellent in low-heat-generation property through enhancement of the reactivity between the coupling agent and the rubber component.Type: GrantFiled: December 21, 2012Date of Patent: April 24, 2018Assignee: BRIDGESTONE CORPORATIONInventors: Noriaki Yukimura, Satoshi Horie, Takumi Toda
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Patent number: 9518172Abstract: The present invention provides a rubber composition comprising, as blended, a rubber component (A), an amino acid derivative (B) and a filler containing an inorganic filler (C), and further containing, as incorporated therein, at least one selected from sulfur and a sulfur compound. The vulcanization rate of the rubber composition is accelerated and the low-heat-generation property thereof is excellent.Type: GrantFiled: February 26, 2013Date of Patent: December 13, 2016Assignee: BRIDGESTONE CORPORATIONInventors: Takeshi Shiono, Takumi Toda, Satoshi Horie
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Publication number: 20150031821Abstract: The present invention provides a rubber composition comprising, as blended, a rubber component (A), an amino acid derivative (B) and a filler containing an inorganic filler (C), and further containing, as incorporated therein, at least one selected from sulfur and a sulfur compound. The vulcanization rate of the rubber composition is accelerated and the low-heat-generation property thereof is excellent.Type: ApplicationFiled: February 26, 2013Publication date: January 29, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Takeshi Shiono, Takumi Toda, Satoshi Horie
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Publication number: 20140350174Abstract: The present invention relates to a method for producing a rubber composition obtained by compounding a rubber component (A) containing at least one kind selected from natural rubber and synthetic diene rubber, a filler containing an inorganic filler (B), a silane coupling agent (C), and thiourea, the method comprising kneading the rubber composition in plural stages, the rubber component (A), the whole or a part of the inorganic filler (B), the whole or a part of the silane coupling agent (C), and the thiourea being kneaded in the first stage of kneading, and thus provides a method for producing a rubber composition excellent in low-heat-generation property through enhancement of the reactivity between the coupling agent and the rubber component.Type: ApplicationFiled: December 21, 2012Publication date: November 27, 2014Applicant: BRIDGESTONE CORPORATIONInventors: Noriaki Yukimura, Satoshi Horie, Takumi Toda
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Publication number: 20140329946Abstract: The present invention is a rubber composition containing a rubber component, a specific hydroxy group-having thiourea derivative, a thioamide compound, an acidic compound, a combination of a nucleophilic reagent except guanidine compounds and a guanidine compound, a compound selected from a phosphorous acid compound and a salt of a phosphorous acid compound, and a filler containing an inorganic filler, and a method for the rubber composition, providing the rubber composition having an improved low-heat-generation property and its production method.Type: ApplicationFiled: October 19, 2012Publication date: November 6, 2014Applicant: BRIDGESTONE CORPORATIONInventors: Satoshi Horie, Takumi Toda, Noriaki Yukimura