Patents by Inventor Satoshi Nagatsuka

Satoshi Nagatsuka 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).

  • Oil agent for carbon-fiber-precursor acrylic fiber, oil agent composition for carbon-fiber-precursor acrylic fiber, oil-treatment-liquid for carbon-fiber-precursor acrylic fiber, and carbon-fiber-precursor acrylic fiber bundle
    Patent number: 10550512
    Abstract: An oil for a carbon fiber precursor acrylic fiber including: a hydroxybenzoate ester (A) indicated by formula (1a); an amino-modified silicone (H) indicated by formula (3e); and an organic compound (X) which is compatible with the hydroxybenzoate ester (A), in which a residual mass rate R1 at 300° C. in thermal mass analysis in an air atmosphere is 70-100 mass % inclusive, and which is a liquid at 100° C., and a carbon fiber precursor acrylic fiber bundle to which the oil for a carbon fiber precursor acrylic fiber is adhered.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: February 4, 2020
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hiromi Aso, Mitsuhiro Hamada, Satoshi Nagatsuka, Tetsuo Takano, Motoi Konishi, Masaaki Tsuchihashi
  • OIL AGENT FOR CARBON-FIBER-PRECURSOR ACRYLIC FIBER, OIL AGENT COMPOSITION FOR CARBON-FIBER-PRECURSOR ACRYLIC FIBER, OIL-TREATMENT-LIQUID FOR CARBON-FIBER-PRECURSOR ACRYLIC FIBER, AND CARBON-FIBER-PRECURSOR ACRYLIC FIBER BUNDLE
    Publication number: 20170284016
    Abstract: An oil for a carbon fiber precursor acrylic fiber including: a hydroxybenzoate ester (A) indicated by formula (1a); an amino-modified silicone (H) indicated by formula (3e); and an organic compound (X) which is compatible with the hydroxybenzoate ester (A), in which a residual mass rate R1 at 300° C. in thermal mass analysis in an air atmosphere is 70-100 mass % inclusive, and which is a liquid at 100° C., and a carbon fiber precursor acrylic fiber bundle to which the oil for a carbon fiber precursor acrylic fiber is adhered.
    Type: Application
    Filed: September 11, 2015
    Publication date: October 5, 2017
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiromi ASO, Mitsuhiro HAMADA, Satoshi NAGATSUKA, Tetsuo TAKANO, Motoi KONISHI, Masaaki TSUCHIHASHI
  • High-performance pressure vessel and carbon fiber for pressure vessel
    Patent number: 8012584
    Abstract: A pressure vessel includes a vessel body and a fiber reinforced plastic layer formed on the surface of the vessel body, wherein the fiber reinforced plastic layer include fiber reinforced plastic in which reinforcing fibers are impregnated with plastic, a strand elastic modulus of the reinforcing fiber is 305 GPa or higher, and a tensile elongation of the reinforcing fiber is 1.45 to 1.70%. A carbon fiber for a pressure vessel has a strand elastic modulus of 305 GPa or higher and a tensile elongation of 1.45 to 1.70%.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: September 6, 2011
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Naoki Sugiura, Satoshi Nagatsuka, Hidehiro Takemoto, Makoto Matsumoto, Masayuki Sugiura
  • High-performance pressure vessel and carbon fiber for pressure vessel
    Publication number: 20060163261
    Abstract: A pressure vessel includes a vessel body and a fiber reinforced plastic layer formed on the surface of the vessel body, wherein the fiber reinforced plastic layer include fiber reinforced plastic in which reinforcing fibers are impregnated with plastic, a strand elastic modulus of the reinforcing fiber is 305 GPa or higher, and a tensile elongation of the reinforcing fiber is 1.45 to 1.70%. A carbon fiber for a pressure vessel has a strand elastic modulus of 305 GPa or higher and a tensile elongation of 1.45 to 1.70%.
    Type: Application
    Filed: August 26, 2004
    Publication date: July 27, 2006
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Naoki Sugiura, Satoshi Nagatsuka, Hidehiro Takemoto, Makoto Matsumoto, Masayuki Sugiura