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).

  • Publication number: 20240052067
    Abstract: 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: Application
    Filed: October 15, 2021
    Publication date: February 15, 2024
    Inventors: Masayuki TANIGUCHI, Takumi TODA
  • Publication number: 20230374164
    Abstract: 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: Application
    Filed: October 15, 2021
    Publication date: November 23, 2023
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Masayuki TANIGUCHI, Takumi TODA
  • Publication number: 20200190293
    Abstract: 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: Application
    Filed: April 4, 2018
    Publication date: June 18, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takumi TODA, Kenta ISHIBASHI, Hidenobu AKAHANE, Seiichi TAHARA, Ryota SONE
  • Publication number: 20190202238
    Abstract: 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: Application
    Filed: July 26, 2017
    Publication date: July 4, 2019
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Saaya SHIONO, Takumi TODA, Makoto HASHIGUCHI
  • Publication number: 20190202237
    Abstract: 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: Application
    Filed: August 2, 2017
    Publication date: July 4, 2019
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Saaya SHIONO, Makoto HASHIGUCHI, Takumi TODA
  • Patent number: 9951197
    Abstract: 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: Grant
    Filed: December 21, 2012
    Date of Patent: April 24, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Noriaki Yukimura, Satoshi Horie, Takumi Toda
  • Patent number: 9518172
    Abstract: 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: Grant
    Filed: February 26, 2013
    Date of Patent: December 13, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Takeshi Shiono, Takumi Toda, Satoshi Horie
  • Publication number: 20150031821
    Abstract: 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: Application
    Filed: February 26, 2013
    Publication date: January 29, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takeshi Shiono, Takumi Toda, Satoshi Horie
  • Publication number: 20140350174
    Abstract: 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: Application
    Filed: December 21, 2012
    Publication date: November 27, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Noriaki Yukimura, Satoshi Horie, Takumi Toda
  • Publication number: 20140329946
    Abstract: 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: Application
    Filed: October 19, 2012
    Publication date: November 6, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Satoshi Horie, Takumi Toda, Noriaki Yukimura