Patents by Inventor Youichi Neki

Youichi Neki 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).

  • Method for continuous treatment of saponified ethylene-vinyl acetate copolymer
    Patent number: 6576704
    Abstract: The method of treating a saponified ethylene vinyl acetate copolymer (A) with an acid (B) and/or its salt (C) which comprises feeding a saponified ethylene-vinyl acetate copolymer (A′) in which the acid (B) and/or salt (C) has been incorporated in advance to a column reactor from its top, simultaneously feeding an aqueous solution of the acid (B) and/or salt (C) from the bottom of the reactor to thereby effect a countercurrent contact of (A′) with the aqueous solution of (B) and/or (C), withdrawing the excess of the aqueous solution of acid (B) and/or salt (C) from the reactor top, and continuously withdrawing the treated saponified ethylene-vinyl acetate copolymer from the reactor bottom.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: June 10, 2003
    Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshiharu Nagao, Youichi Neki, Masahiko Taniguchi, Kenji Ninomiya
  • Method for continuous treatment of saponified ethylene-vinyl acetate copolymer
    Publication number: 20010007004
    Abstract: The method of treating a saponified ethylene vinyl acetate copolymer (A) with an acid (B) and/or its salt (C) which comprises feeding a saponified ethylene-vinyl acetate copolymer (A′) in which the acid (B) and/or salt (C) has been incorporated in advance to a column reactor from its top, simultaneously feeding an aqueous solution of the acid (B) and/or salt (C) from the bottom of the reactor to thereby effect a countercurrent contact of (A′) with the aqueous solution of (B) and/or (C), withdrawing the excess of the aqueous solution of acid (B) and/or salt (C) from the reactor top, and continuously withdrawing the treated saponified ethylene-vinyl acetate copolymer from the reactor bottom.
    Type: Application
    Filed: December 12, 2000
    Publication date: July 5, 2001
    Applicant: Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshiharu Nagao, Youichi Neki, Masahiko Taniguchi, Kenji Ninomiya