Patents by Inventor Tatsuaki Hattori

Tatsuaki Hattori 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).

  • Patent number: 5308910
    Abstract: There is disclosed a composition which comprises an aqueous emulsion selected from (A-1) aqueous emulsion comprising a dispersoid which comprises a vinyl ester polymer (1) and a copolymer a (meth)acrylic ester and a primary hydroxyl group-containing ethylenically unsaturated monomer (2), the polymer (1) being present principally in the central part of the dispersoid, the copolymer (2) having a glass transition temperature of lower than 50.degree. C. an being present principally in the peripheral part thereof; and a dispersant comprising a vinyl alcohol polymer and (A-2) aqueous emulsion comprising a dispersoid which comprises a copolymer of a hydrophobic unsaturated monomer such as (meth)acrylic ester and a primary hydroxyl group-containing ethylenically unsaturated monomer; and a dispersant comprising a vinyl alcohol polymer having a mercapto group at an end thereof and a (B) polyvalent isocyanate compound.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: May 3, 1994
    Assignee: Kuraray Co., Ltd.
    Inventors: Ken Yuki, Masato Nakamae, Hitoshi Maruyama, Tatsuaki Hattori
  • Patent number: 3931088
    Abstract: An adhesive composition is provided comprising (1) a member selected from the group consisting of an aqueous solution of polyvinylalcohol, an aqueous emulsion of vinyl acetate polymer and an aqueous latex of butadiene polymer and (2) a hydrophobic solution of an isocyanate compound or polymer.
    Type: Grant
    Filed: August 1, 1973
    Date of Patent: January 6, 1976
    Assignees: Kuraray Co., Ltd., Asahi Co., Ltd., Koyo Sangyo Co., Ltd.
    Inventors: Seiichi Sakurada, Yasuaki Miyazaki, Tatsuaki Hattori, Makoto Shiraishi, Taisei Inoue