Patents by Inventor Michiharu Taniguchi

Michiharu Taniguchi 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: 20200247672
    Abstract: To provide a boron nitride powder having excellent heat conductivity and high particle strength. Provided is a boron nitride powder which comprises bulky boron nitride formed such that scaly primary particles of hexagonal boron nitride are aggregated to form bulky particles, and which has the following characteristics (A) to (C): (A) a particle strength of the bulky particles at a cumulative breakdown rate of 63.2% is 5.0 MPa or more; (B) an average particle size of the boron nitride powder is 2 ?m or more and 20 ?m or less; and (C) an orientation index of the boron nitride powder as determined from X-ray diffraction is 20 or less.
    Type: Application
    Filed: August 17, 2018
    Publication date: August 6, 2020
    Applicant: DENKA COMPANY LIMITED
    Inventors: Go TAKEDA, Michiharu NAKASHIMA, Yoshitaka TANIGUCHI
  • Patent number: 10322559
    Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average fiber length of 5 to 100 mm and a thermoplastic resin. In the shaped product, a volume fraction of reinforcing fibers is 5 to 80%, a reference plane (S) and a standing plane (B) inclined at an angle of 45 to 90 degrees with respect to the reference plane are included, a ratio of an area of the standing plane (B) to an area of the reference plane (S) is 0.5 to 100, and in the fiber-reinforced composite material constituting the shaped product, a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: June 18, 2019
    Assignee: Teijin Limited
    Inventors: Michiharu Taniguchi, Motoomi Arakawa, Toru Sugiyama, Yasunori Nagakura
  • Patent number: 10006677
    Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin. The shaped product maintains isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: June 26, 2018
    Assignee: Teijin Limited
    Inventors: Michiharu Taniguchi, Motoomi Arakawa, Yasunori Nagakura, Tsukasa Arai, Akihiko Obata
  • Patent number: 9855689
    Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average length of 5 mm or more and 100 mm or less and a thermoplastic resin, in which a volume fraction of reinforcing fibers (Vf=100×volume of reinforcing fibers/(volume of reinforcing fibers+volume of thermoplastic resin)) is 5 to 80%, grains are formed on a surface of the shaped product, and a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more, the critical number defined by Formula (1), to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less: Critical number of single fiber=600/D??(1) (wherein D is an average fiber diameter (?m) of single reinforcing fiber).
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: January 2, 2018
    Assignee: Teijin Limited
    Inventors: Motoomi Arakawa, Toru Sugiyama, Michiharu Taniguchi, Yasunori Nagakura
  • Patent number: 8992811
    Abstract: This method for manufacturing a shaped product is characterized in preparing a specific random mat including a thermoplastic resin and carbon fiber bundles having an average fiber length of 5-100 mm, impregnating a thermoplastic resin into the random mat, pressing the random mat in a metal mold in a range of 0.1-20 MPa, and then taking out the random mat from the metal mold.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: March 31, 2015
    Assignee: Teijin Limited
    Inventors: Yasunori Nagakura, Motoomi Arakawa, Michiharu Taniguchi, Akihiko Obata
  • Publication number: 20150064408
    Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin. The shaped product maintains isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.
    Type: Application
    Filed: October 31, 2014
    Publication date: March 5, 2015
    Applicant: TEIJIN LIMITED
    Inventors: Michiharu Taniguchi, Motoomi Arakawa, Yasunori Nagakura, Tsukasa Arai, Akihiko Obata
  • Patent number: 8900502
    Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin, the shaped product with maintained isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: December 2, 2014
    Assignee: Teijin Limited
    Inventors: Michiharu Taniguchi, Motoomi Arakawa, Yasunori Nagakura, Tsukasa Arai, Akihiko Obata
  • Publication number: 20140186584
    Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average length of 5 mm or more and 100 mm or less and a thermoplastic resin, in which a volume fraction of reinforcing fibers (Vf=100×volume of reinforcing fibers/(volume of reinforcing fibers+volume of thermoplastic resin)) is 5 to 80%, grains are formed on a surface of the shaped product, and a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more, the critical number defined by Formula (1), to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less: Critical number of single fiber=600/D??(1) (wherein D is an average fiber diameter (?m) of single reinforcing fiber).
    Type: Application
    Filed: March 6, 2014
    Publication date: July 3, 2014
    Applicant: Teijin Limited
    Inventors: Motoomi Arakawa, Toru Sugiyama, Michiharu Taniguchi, Yasunori Nagakura
  • Publication number: 20140178631
    Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average fiber length of 5 to 100 mm and a thermoplastic resin. In the shaped product, a volume fraction of reinforcing fibers is 5 to 80%, a reference plane (S) and a standing plane (B) inclined at an angle of 45 to 90 degrees with respect to the reference plane are included, a ratio of an area of the standing plane (B) to an area of the reference plane (S) is 0.5 to 100, and in the fiber-reinforced composite material constituting the shaped product, a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less.
    Type: Application
    Filed: February 27, 2014
    Publication date: June 26, 2014
    Applicant: Teijin Limited
    Inventors: Michiharu Taniguchi, Motoomi Arakawa, Toru Sugiyama, Yasunori Nagakura
  • Publication number: 20140148072
    Abstract: This method for manufacturing a shaped product is characterized in preparing a specific random mat including a thermoplastic resin and carbon fiber bundles having an average fiber length of 5-100 mm, impregnating a thermoplastic resin into the random mat, pressing the random mat in a metal mold in a range of 0.1-20 MPa, and then taking out the random mat from the metal mold.
    Type: Application
    Filed: February 3, 2014
    Publication date: May 29, 2014
    Applicant: Tenjin Limited
    Inventors: Yasunori Nagakura, Motoomi Arakawa, Michiharu Taniguchi, Akihiko Obata
  • Publication number: 20140077412
    Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin, the shaped product with maintained isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.
    Type: Application
    Filed: November 27, 2013
    Publication date: March 20, 2014
    Applicant: TEIJIN LIMITED
    Inventors: Michiharu Taniguchi, Motoomi Arakawa, Yasunori Nagakura, Tsukasa Arai, Akihiko Obata
  • Publication number: 20140004308
    Abstract: A molded product, including a fiber-reinforced composite material containing reinforcing fibers having an average fiber length of 5 mm to 100 mm and a thermoplastic resin, wherein the molded product has thickness gradient, an amount of the thermoplastic resin is 10 to 1,000 parts by weight per 100 parts by weight of thee reinforcing fibers, and the reinforcing fibers have a fiber areal weight of from 25 g/m2 to 3,000 g/m2 and are substantially two-dimensionally randomly oriented.
    Type: Application
    Filed: August 7, 2013
    Publication date: January 2, 2014
    Applicant: TEIJIN LIMITED
    Inventors: Michiharu Taniguchi, Masaru Sato, Koji Suzuki, Toru Sugiyama, Yasunori Nagakura, Motoomi Arakawa
  • Publication number: 20130344282
    Abstract: The present invention relates to a shaped product being excellent in isotropy constituted by a fiber-reinforced composite material in which discontinuous reinforcing fibers are isotropic in a plane and are two-dimensionally oriented in the thermoplastic resin, the reinforcing fibers contained in the shaped product includes a reinforcing fiber bundle (A) constituted by the reinforcing fibers of the critical single fiber number defined by formula (1) or more, a ratio of the reinforcing fiber bundle (A) to the total amount of the reinforcing fibers in the shaped product is 20 vol % or more and less than 90 vol %, and the average number (N) of the reinforcing fibers in the reinforcing fiber bundle (A) satisfies formula (2): Critical single fiber number=600/D??(1) 0.7×104/D2<N<1×105/D2??(2) wherein D is an average fiber diameter (?m) of the reinforcing fibers.
    Type: Application
    Filed: August 27, 2013
    Publication date: December 26, 2013
    Applicant: TEIJIN LIMITED
    Inventors: Yutaka Yagi, Toru Sugiyama, Yutaka Kondo, Michiharu Taniguchi, Yuhei Konagai, Ikkou Furukawa