Patents by Inventor Shouhei HIRASE

Shouhei HIRASE 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).

  • Organic-inorganic composite particles
    Patent number: 10570327
    Abstract: An object of the present invention is to improve the water dispersibility of the PVA-based resin and also to suppress the swelling of the PVA-based resin. The object is achieved by organic-inorganic composite particles, which have an average particle size of preferably 1 ?m to 3,000 ?m, including a polyvinyl alcohol-based resin and a component having a three-dimensional siloxane crosslinked structure that is derived from a hydrolysis-polycondensation product of an alkoxysilane and/or a low condensate thereof, wherein the alkoxysilane includes a T unit and/or a Q unit as a structural unit (s), and a Si content with respect to a total weight of the composite particles is 0.1 wt % or more and 23 wt % or less in terms of SiO2.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: February 25, 2020
    Assignee: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Hanako Katou, Shouhei Hirase, Takumi Watanabe, Shoya Yoda, Shusaku Mandai
  • ORGANIC-INORGANIC COMPOSITE PARTICLES
    Publication number: 20190153290
    Abstract: An object of the present invention is to improve the water dispersibility of the PVA-based resin and also to suppress the swelling of the PVA-based resin. The object is achieved by organic-inorganic composite particles, which have an average particle size of preferably 1 ?m to 3,000 ?m, including a polyvinyl alcohol-based resin and a component having a three-dimensional siloxane crosslinked structure that is derived from a hydrolysis-polycondensation product of an alkoxysilane and/or a low condensate thereof, wherein the alkoxysilane includes a T unit and/or a Q unit as a structural unit (s), and a Si content with respect to a total weight of the composite particles is 0.1 wt % or more and 23 wt % or less in terms of SiO2.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 23, 2019
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Hanako KATOU, Shouhei HIRASE, Takumi WATANABE, Shouya YODA, Shusaku MANDAI