Patents by Inventor Takato Nakamura

Takato Nakamura 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: 20190245234
    Abstract: [OBJECT] To provide a proton-conductive membrane which exhibits high proton conductivity even in an anhydrous environment. [SOLVING MEANS] Provided is a proton-conductive membrane including a crosslinked polymer and a plasticizer, wherein the crosslinked polymer includes a proton acceptor group in an amount equal to not less than 10 mol % of repeating units constituting the crosslinked polymer, the plasticizer includes a proton donor compound having a pKa value of not more than 2.5, and the plasticizer is a viscoelastic solid in a temperature range of 50° C. to 120° C.
    Type: Application
    Filed: January 24, 2019
    Publication date: August 8, 2019
    Inventors: Naoki NAKAMURA, Atsushi NORO, Takato KAJITA, Haruka TANAKA, Yushu MATSUSHITA
  • Patent number: 10138925
    Abstract: An FRP drive shaft includes an end joint joined to at least one end of an FRP cylinder via an outer collar. The end joint includes a serrated portion on an outer periphery thereof. The outer collar includes a small-diameter collar portion and a large-diameter collar portion. The serrated portion is press-fitted into an inner periphery of the FRP cylinder and fixed to an inner periphery of the small-diameter collar portion. A gap between an inner periphery of the large-diameter collar portion and an outer periphery of the FRP cylinder is filled with an adhesive for fixing the inner periphery of the large-diameter collar portion and the outer periphery of the FRP cylinder to each other. An adhesive-accumulating space which partially increases a filling amount of the adhesive is formed between the inner periphery of the large-diameter collar portion and the outer periphery of the FRP cylinder.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: November 27, 2018
    Assignees: FUJIKURA RUBBER LTD., HONDA MOTOR CO., LTD.
    Inventors: Takato Nakamura, Masako Okochi, Naoki Kimoto, Tsuyoshi Matsuda, Yuji Katayama, Michihiro Komatsu
  • Publication number: 20170152884
    Abstract: An FRP drive shaft includes an end joint joined to at least one end of an FRP cylinder via an outer collar. The end joint includes a serrated portion on an outer periphery thereof. The outer collar includes a small-diameter collar portion and a large-diameter collar portion. The serrated portion is press-fitted into an inner periphery of the FRP cylinder and fixed to an inner periphery of the small-diameter collar portion. A gap between an inner periphery of the large-diameter collar portion and an outer periphery of the FRP cylinder is filled with an adhesive for fixing the inner periphery of the large-diameter collar portion and the outer periphery of the FRP cylinder to each other. An adhesive-accumulating space which partially increases a filling amount of the adhesive is formed between the inner periphery of the large-diameter collar portion and the outer periphery of the FRP cylinder.
    Type: Application
    Filed: March 6, 2015
    Publication date: June 1, 2017
    Inventors: Takato Nakamura, Masako Okochi, Naoki Kimoto, Tsuyoshi Matsuda, Yuji Katayama, Michihiro Komatsu
  • Patent number: 8883060
    Abstract: A method is provided for producing a weight-reduced FRP cylinder which can attain high strength, and also such an FRP cylinder is provided. This FRP cylinder producing method, in which a plurality of prepregs formed by impregnating reinforced fibers with thermosetting resin sheets are wound into a cylinder and thermally cured to be formed as a plurality of FRP layers, includes a simultaneous multilayer winding process in which a torsional rigidity retaining prepreg and a buckling prevention prepreg are continuously wound a plurality of turns with being layered on each other when the plurality of prepregs are wound into a cylinder, wherein the torsional rigidity retaining prepreg includes a layer of fibers oblique to a cylindrical axis direction of the FRP cylinder, and wherein the buckling prevention prepreg includes a layer of fibers orthogonal to the cylindrical axis direction.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: November 11, 2014
    Assignee: Fujikura Rubber Ltd.
    Inventors: Takato Nakamura, Norio Matsumoto, Naoki Kimoto
  • Patent number: 8882950
    Abstract: A prepreg winding method includes the steps of preparing a plate, a mandrel movable toward and away from the plate, and a press roll movable toward and away from the mandrel and having an axis parallel to the mandrel; mounting a prepreg on the plate, the prepreg being formed by impregnating reinforced fibers with a thermosetting resin sheet; winding a leading end of the prepreg mounted on the plate around the mandrel, and making a pressing force act on the plate and the mandrel therebetween with the prepreg sandwiched between the plate and the mandrel and making a pressing force act on the mandrel and the press roll therebetween with the prepreg sandwiched between the mandrel and the press roll; and winding the prepreg around the mandrel by rotating the mandrel and the press roll.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: November 11, 2014
    Assignee: Fujikura Rubber Ltd.
    Inventors: Takato Nakamura, Norio Matsumoto, Naoki Kimoto
  • Patent number: 8876614
    Abstract: An FRP drive shaft is formed by joining metal end-joints to each end of an FRP cylinder, wherein each of the metal end-joints includes a press-fitting joint having a serrated portion which is press-fitted into the FRP cylinder, and a cylindrical outer collar which is fixed to an outer periphery of the FRP cylinder, and non-circular engaging portions which are engaged with each other to transfer rotation are formed on the press-fitting joint and the cylindrical outer collar, respectively.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: November 4, 2014
    Assignee: Fujikura Rubber Ltd.
    Inventors: Takato Nakamura, Naoki Kimoto
  • Patent number: 8852021
    Abstract: A golf club shaft in which the isotropy of the prepregs configuring a torsion rigidity holding layer is high and in which sufficient torsional rigidity can be secured with fewer plies of fewer prepregs. The golf club shaft includes a torsional rigidity holding layer made of a thermosetting resin which contains reinforced fibers extending obliquely to a longitudinal direction of the shaft. The torsional rigidity holding layer includes a multilayer set prepreg, in which at least two layers of prepregs made of reinforced fibers are impregnated with a thermosetting resin. A plurality of prepregs in the multilayer set prepreg include reinforced fibers extending in mutually different directions. The multilayer set prepreg is continuously wound by at least two turns with the plurality of prepregs layered on each other. A golf club uses the shaft.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: October 7, 2014
    Assignee: Fujikura Rubber Ltd.
    Inventors: Norio Matsumoto, Takato Nakamura, Masaki Wakabayashi, Tomonobu Kanno
  • Patent number: 8770942
    Abstract: A scratch-resistant blade such as an FRP wind turbine blade and a blade protective sheet which can be easily repaired when scratched. A blade is provided with a laminated protective sheet bonded to at least part of a leading edge of an FRP blade body of said blade, wherein the laminated protective sheet comprises an adhesive layer, a intermediate fabric layer and a durable surface layer, in that order from the blade body.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: July 8, 2014
    Assignee: Fujikura Rubber Ltd
    Inventors: Hitoshi Saitou, Takato Nakamura, Nobuaki Suzuki
  • Patent number: 8541615
    Abstract: Disclosed is a method for producing a biphenyltetracarboxylic acid ester by oxidative coupling a phthalic acid ester by using a catalyst comprising at least a palladium salt, a copper salt and a ?-dicarbonyl compound in the presence of a molecular oxygen, wherein the ?-dicarbonyl compound is supplied into a reaction mixture liquid intermittently at an interval of less than 30 minutes, or continuously. This method allows, in particular, the selective and economical production of an asymmetric biphenyltetracarboxylic acid tetraester such as 2,3,3?,4?-biphenyltetracarboxylic acid tetraester.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: September 24, 2013
    Assignee: Ube Industries, Ltd.
    Inventors: Masayuki Nishio, Hiroaki Imajima, Takato Nakamura, Yoshihiro Yamauchi
  • Publication number: 20130101426
    Abstract: A scratch-resistant blade such as an FRP wind turbine blade and a blade protective sheet which can be easily repaired when scratched. A blade is provided with a laminated protective sheet bonded to at least part of a leading edge of an FRP blade body of said blade, wherein the laminated protective sheet comprises an adhesive layer, a intermediate fabric layer and a durable surface layer, in that order from the blade body.
    Type: Application
    Filed: January 25, 2012
    Publication date: April 25, 2013
    Applicant: FUJIKURA RUBBER LTD
    Inventors: Hitoshi Saitou, Takato Nakamura, Nobuaki Suzuki
  • Patent number: 8337952
    Abstract: An object of the present invention is to provide a single-phase film of a metal sulfide with good quality, and a method for preparing a metal sulfide film at a low cost in a convenient manner. The present invention provides a preparation method of a metal sulfide film, comprising the steps of providing metal halide, such as iron halide (FeCl3, FeI3, FeBr3, FeCl2, FeI2 and FeBr2), as a first raw material and a thioamide compound, such as thioacetamide, as a second raw material, preferably vaporizing these raw materials and reacting them at atmospheric pressure; and a metal sulfide film prepared by this method.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: December 25, 2012
    Assignee: Suzuki Motor Corporation
    Inventors: Tadashi Takahashi, Naoyuki Takahashi, Takato Nakamura
  • Publication number: 20120295735
    Abstract: A golf club shaft and a golf club using such a golf club shaft are achieved in which the isotropy of the prepregs configuring a torsion rigidity holding layer is high and in which sufficient torsional rigidity can be secured with a lesser number of plies of prepregs. The golf club shaft is characterized by a torsional rigidity holding layer made of a thermosetting resin which contains reinforced fibers extending obliquely to a longitudinal direction of the shaft. The torsional rigidity holding layer includes a multilayer set prepreg, in which at least two layers of prepregs made of reinforced fibers are impregnated with a thermosetting resin. A plurality of prepregs in the multilayer set prepreg include reinforced fibers extending in mutually different directions; and the multilayer set prepreg is continuously wound by at least two turns with the plurality of prepregs layered on each other.
    Type: Application
    Filed: December 3, 2010
    Publication date: November 22, 2012
    Applicant: Fujikura Rubber Ltd.
    Inventors: Norio Matsumoto, Takato Nakamura, Masaki Wakabayashi, Tomonobu Kanno
  • Publication number: 20120247652
    Abstract: A prepreg winding method includes the steps of preparing a plate, a mandrel movable toward and away from the plate, and a press roll movable toward and away from the mandrel and having an axis parallel to the mandrel; mounting a prepreg on the plate, the prepreg being formed by impregnating reinforced fibers with a thermosetting resin sheet; winding a leading end of the prepreg mounted on the plate around the mandrel, and making a pressing force act on the plate and the mandrel therebetween with the prepreg sandwiched between the plate and the mandrel and making a pressing force act on the mandrel and the press roll therebetween with the prepreg sandwiched between the mandrel and the press roll; and winding the prepreg around the mandrel by rotating the mandrel and the press roll.
    Type: Application
    Filed: May 28, 2010
    Publication date: October 4, 2012
    Applicant: FUJIKURA RUBBER LTD.
    Inventors: Takato Nakamura, Norio Matsumoto, Naoki Kimoto
  • Publication number: 20120157217
    Abstract: An FRP drive shaft is achieved in which the joint strength between the FRP cylinder and the metal joint fixed at each end thereof can be enhanced, thereby capable of achieving a high transfer torque. The FRP drive shaft, according to the present invention, is formed by joining metal end-joints to each end of an FRP cylinder, wherein each of the metal end-joints includes a press-fitting joint having a serrated portion which is press-fitted into the FRP cylinder, and a cylindrical outer collar which is fixed to an outer periphery of the FRP cylinder, and non-circular engaging portions which are engaged with each other to transfer rotation are formed on the press-fitting joint and the cylindrical outer collar, respectively.
    Type: Application
    Filed: May 28, 2010
    Publication date: June 21, 2012
    Applicant: Fujikura Rubber Ltd.
    Inventors: Takato Nakamura, Naoki Kimoto
  • Publication number: 20110281061
    Abstract: A method is provided for producing a weight-reduced FRP cylinder which can attain high strength, and also such an FRP cylinder is provided. This FRP cylinder producing method, in which a plurality of prepregs formed by impregnating reinforced fibers with thermosetting resin sheets are wound into a cylinder and thermally cured to be formed as a plurality of FRP layers, includes a simultaneous multilayer winding process in which a torsional rigidity retaining prepreg and a buckling prevention prepreg are continuously wound a plurality of turns with being layered on each other when the plurality of prepregs are wound into a cylinder, wherein the torsional rigidity retaining prepreg includes a layer of fibers oblique to a cylindrical axis direction of the FRP cylinder, and wherein the buckling prevention prepreg includes a layer of fibers orthogonal to the cylindrical axis direction.
    Type: Application
    Filed: January 14, 2010
    Publication date: November 17, 2011
    Applicant: FUJIKURA RUBBER LTD.
    Inventors: Takato Nakamura, Norio Matsumoto, Naoki Kimoto
  • Publication number: 20110137069
    Abstract: Disclosed is a method for producing a biphenyltetracarboxylic acid ester by oxidative coupling a phthalic acid ester by using a catalyst comprising at least a palladium salt, a copper salt and a ?-dicarbonyl compound in the presence of a molecular oxygen, wherein the ?-dicarbonyl compound is supplied into a reaction mixture liquid intermittently at an interval of less than 30 minutes, or continuously. This method allows, in particular, the selective and economical production of an asymmetric biphenyltetracarboxylic acid tetraester such as 2,3,3?,4?-biphenyltetracarboxylic acid tetraester.
    Type: Application
    Filed: August 6, 2009
    Publication date: June 9, 2011
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Masayuki Nishio, Hiroaki Imajima, Takato Nakamura, Yoshihiro Yamauchi
  • Publication number: 20080113202
    Abstract: A process for manufacturing a quartz crystal element consists of the steps of producing plural quartz layers on a surface of a crystalline substrate having a lattice constant differing from that of quartz crystal, in which each of the quartz layers consists of a crystalline phase and an amorphous phase, and percentage of the crystalline phase in the quartz layer farther from the substrate is larger than percentage of the crystalline phase in the quartz layer adjacent to the substrate; and producing an epitaxially grown quartz crystal film on the surface of the quartz layer farther from the substrate by a reaction between silicon alkoxide and oxygen.
    Type: Application
    Filed: November 13, 2007
    Publication date: May 15, 2008
    Applicant: HUMO LABORATORY, LTD.
    Inventors: Naoyuki TAKAHASHI, Takato NAKAMURA, Satoshi NONAKA, Yoshinori KUBO, Yoichi SHINRIKI, Katsumi TAMANUKI
  • Patent number: 7311777
    Abstract: A process for manufacturing a quartz crystal element consists of the steps of producing plural quartz layers on a surface of a crystalline substrate having a lattice constant differing from that of quartz crystal, in which each of the quartz layers consists of a crystalline phase and an amorphous phase, and percentage of the crystalline phase in the quartz layer farther from the substrate is larger than percentage of the crystalline phase in the quartz layer adjacent to the substrate; and producing an epitaxially grown quartz crystal film on the surface of the quartz layer farther from the substrate by a reaction between silicon alkoxide and oxygen.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: December 25, 2007
    Assignee: Humo Laboratory, Ltd
    Inventors: Naoyuki Takahashi, Takato Nakamura, Satoshi Nonaka, Yoshinori Kubo, Yoichi Shinriki, Katsumi Tamanuki
  • Patent number: 7186295
    Abstract: A single crystal of quartz thin film and a production method therefor are provided. A method for producing a quartz epitaxial thin film comprises the steps of vaporizing a silicon alkoxide as a silicon source under atmospheric pressure to introduce the silicon alkoxide to a substrate with hydrogen chloride as a reaction promoter, and reacting ethyl silicate with oxygen to deposit a quartz on the substrate. The single crystal of quartz thin film has excellent crystalinity, and optical properties.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: March 6, 2007
    Assignee: Humo Laboratory, Ltd.
    Inventors: Naoyuki Takahashi, Takato Nakamura, Satoshi Nonaka, Hiromi Yagi, Yoichi Shinriki, Katsumi Tamanuki
  • Publication number: 20060127692
    Abstract: An object of the present invention is to provide a single-phase film of a metal sulfide with good quality, and a method for preparing a metal sulfide film at a low cost in a convenient manner. The present invention provides a preparation method of a metal sulfide film, comprising the steps of providing metal halide, such as iron halide (FeCl3, FeI3, FeBr3, FeCl2, FeI2 and FeBr2), as a first raw material and a thioamide compound, such as thioacetamide, as a second raw material, preferably vaporizing these raw materials and reacting them at atmospheric pressure; and a metal sulfide film prepared by this method.
    Type: Application
    Filed: August 27, 2003
    Publication date: June 15, 2006
    Inventors: Tadashi Takahashi, Naoyuki Takahashi, Takato Nakamura