Patents by Inventor Nozomu Shigemitsu

Nozomu Shigemitsu 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: 20220298677
    Abstract: A carbon fiber wherein an average fiber diameter of a single fiber is in a range of 3 to 10 ?m, and an average value of an intensity ratio (D/G) of a D peak to a G peak in a Raman spectrum in a cross section perpendicular to a fiber axis direction of the single fiber is 0.90 or less in a region inside a circle having a diameter of 1 ?m and centered at a center of gravity of the cross section of the single fiber, and is 0.90 or less in a region up to 1 ?m inside from an outer periphery of the cross section of the single fiber, wherein the D peak is observed at around 1360 cm?1 and derived from a defect in a graphite structure and the G peak is observed at around 1590 cm?1 and derived from the graphite structure.
    Type: Application
    Filed: January 28, 2022
    Publication date: September 22, 2022
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya MORISHITA, Mitsumasa MATSUSHITA, Mamiko NARITA, Akira KUNITOMO, Nozomu SHIGEMITSU, Takanori TATEMATSU
  • Publication number: 20220170182
    Abstract: A carbon fiber precursor fiber bundle includes: acrylamide-based polymer fibers, wherein the carbon fiber precursor fiber bundle contains single fibers having a circular cross section in a proportion of 30 to 100%, wherein the circular cross section has a ratio of a major axis to a minor axis of 1.0 to 1.3 in a cross section orthogonal to a longitudinal direction of the single fiber, and a fineness of the single fiber is 0.1 to 7 dtex.
    Type: Application
    Filed: August 10, 2021
    Publication date: June 2, 2022
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya MORISHITA, Mamiko NARITA, Mitsumasa MATSUSHITA, Hideyasu KAWAI, Nozomu SHIGEMITSU
  • Publication number: 20210087717
    Abstract: A method of producing a stabilized fiber, including performing a heat treatment on an acrylamide polymer fiber under an oxidizing atmosphere in a stabilization treatment temperature range of 200° C. to 500° C. while applying a tension of 0.07 mN/tex to 15 mN/tex.
    Type: Application
    Filed: September 14, 2020
    Publication date: March 25, 2021
    Inventors: Takuya MORISHITA, Mamiko NARITA, Makoto MOURI, Yoshihiro KIKUZAWA, Hideyasu KAWAI, Nozomu SHIGEMITSU
  • Patent number: 7781528
    Abstract: A power transmission belt having a body with a length, an inside, an outside, and laterally spaced side surfaces. The body has a first rubber composition that includes an organic peroxide used as a cross-linking agent and N,N?-m-phenylenedimaleimide and/or quinone dioxime in an amount of 0.5 to 13 parts by weight per 100 parts by weight of rubber components. The rubber components include (a) ethylene-vinyl ester copolymer and/or an ethylene-?,?-unsaturated carboxylate copolymer, and (b) an ethylene ?-olefin rubber in a ratio of from 5:95 to 100:0 by weight.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: August 24, 2010
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Tsuyoshi Takehara, Nozomu Shigemitsu, Susumu Takaba, Toshimichi Takada
  • Publication number: 20050096433
    Abstract: A power transmission belt having a body with a length, an inside, an outside, and laterally spaced side surfaces. The body has a first rubber composition that includes an organic peroxide used as a cross-linking agent and N,N?-m-phenylenedimaleimide and/or quinone dioxime in an amount of 0.5 to 13 parts by weight per 100 parts by weight of rubber components. The rubber components include (a) ethylene-vinyl ester copolymer and/or an ethylene-?,?-unsaturated carboxylate copolymer, and (b) an ethylene ?-olefin rubber in a ratio of from 5:95 to 100:0 by weight.
    Type: Application
    Filed: October 28, 2004
    Publication date: May 5, 2005
    Inventors: Tsuyoshi Takehara, Nozomu Shigemitsu, Susumu Takaba, Toshimichi Takada