Patents by Inventor Tatsuki Okutsu

Tatsuki Okutsu 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).

  • Magnesium oxide powder, resin composition including same, and method for producing magnesium oxide powder
    Patent number: 10501635
    Abstract: To provide magnesium oxide which is excellent in hydration resistance and hardly causes volume expansion due to hydration and the like, a resin composition containing the same, and a method for producing the magnesium oxide powder. Magnesium oxide powder having a coating layer mainly comprising basic magnesium carbonate in the surface layer, when the amounts of substances of water vapor and carbon dioxide among the gas generated by thermal decomposition at 50 to 500° C. are respectively designated as m-H2O and m-CO2, in a heating evolved gas analysis (EGA-MS) method, the molar fraction represented by m-CO2/(m-H2O+m-CO2) being within the range of 0.3 to 0.6.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: December 10, 2019
    Assignee: UBE MATERIAL INDUSTRIES, LTD.
    Inventors: Naoto Nishida, Tatsuki Okutsu, Naoki Funabashi, Akira Yoshida
  • MAGNESIUM OXIDE POWDER, RESIN COMPOSITION INCLUDING SAME, AND METHOD FOR PRODUCING MAGNESIUM OXIDE POWDER
    Publication number: 20180044530
    Abstract: To provide magnesium oxide which is excellent in hydration resistance and hardly causes volume expansion due to hydration and the like, a resin composition containing the same, and a method for producing the magnesium oxide powder. Magnesium oxide powder having a coating layer mainly comprising basic magnesium carbonate in the surface layer, when the amounts of substances of water vapor and carbon dioxide among the gas generated by thermal decomposition at 50 to 500° C. are respectively designated as m-H2O and m-CO2, in a heating evolved gas analysis (EGA-MS) method, the molar fraction represented by m-CO2/(m-H2O+m-CO2) being within the range of 0.3 to 0.6.
    Type: Application
    Filed: March 2, 2016
    Publication date: February 15, 2018
    Applicant: Ube Material Industries, Ltd.
    Inventors: Naoto Nishida, Tatsuki Okutsu, Naoki Funabashi, Akira Yoshida
  • Fibrous basic magnesium sulfate powder and method for producing same
    Patent number: 8785535
    Abstract: A fibrous basic magnesium sulfate powder which does not contain CO2 in an amount of more than 0.15% by mass, or a fibrous basic magnesium sulfate powder which has a ratio of the infrared absorption within the wave number range of 1,400-1,440 cm?1 relative to the infrared absorption within the wave number range of 3,180-3,530 cm?1 of 0.005 or less. The fibrous basic magnesium sulfate powders exhibit improved physical property-improving effect when dispersed in a resin material.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: July 22, 2014
    Assignee: Ube Material Industries, Ltd.
    Inventors: Ryoichi Nomura, Tatsuki Okutsu
  • FIBROUS BASIC MAGNESIUM SULFATE POWDER AND METHOD FOR PRODUCING SAME
    Publication number: 20140045982
    Abstract: A fibrous basic magnesium sulfate powder which does not contain CO2 in an amount of more than 0.15% by mass, or a fibrous basic magnesium sulfate powder which has a ratio of the infrared absorption within the wave number range of 1,400-1,440 cm?1 relative to the infrared absorption within the wave number range of 3,180-3,530 cm?1 of 0.005 or less. The fibrous basic magnesium sulfate powders exhibit improved physical property-improving effect when dispersed in a resin material.
    Type: Application
    Filed: March 2, 2012
    Publication date: February 13, 2014
    Applicant: UBE MATERIAL INDUSTRIES, LTD.
    Inventors: Ryoichi Nomura, Tatsuki Okutsu