Patents by Inventor Kikuo Imazumi

Kikuo Imazumi 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).

  • Resin composition for optical disk and cured product thereof
    Patent number: 7883757
    Abstract: Disclosed is an ultraviolet-curable resin composition containing a polyurethane compound (A), a photopolymerization initiator (B), and an ethylenically unsaturated compound (C) other than the compound (A). The polyurethane compound (A) is obtained by reacting an epoxycarboxylate compound (c), which is obtained by reacting an epoxy compound (a) having two or more epoxy groups in a molecule with a monocarboxylic acid compound (b) having an ethylenically unsaturated group in a molecule, with a diisocyanate compound (d).
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: February 8, 2011
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Go Mizutani, Kiyohisa Tokuda, Masahiro Naitou, Hideaki Kametani, Kikuo Imazumi
  • Resin composition for optical disk and cured product thereof
    Publication number: 20090081437
    Abstract: Disclosed is an ultraviolet-curable resin composition containing a polyurethane compound (A), a photopolymerization initiator (B), and an ethylenically unsaturated compound (C) other than the compound (A). The polyurethane compound (A) is obtained by reacting an epoxycarboxylate compound (c), which is obtained by reacting an epoxy compound (a) having two or more epoxy groups in a molecule with a monocarboxylic acid compound (b) having an ethylenically unsaturated group in a molecule, with a diisocyanate compound (d).
    Type: Application
    Filed: June 15, 2006
    Publication date: March 26, 2009
    Inventors: Go Mizutani, Kiyohisa Tokuda, Masahiro Naitou, Hideaki Kametani, Kikuo Imazumi
  • Derivative of cephamycin C
    Patent number: 4495348
    Abstract: Disclosed are an N-benzenesulfonyl derivative of cephamycin C represented by the following formula: ##STR1## which can easily be separated as a solid from an aqueous solution thereof, and a process for the preparation thereof.This derivative is valuable as an intermediate leading to a cephamycin type antibiotic substance.
    Type: Grant
    Filed: November 24, 1981
    Date of Patent: January 22, 1985
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Mamoru Kunishima, Masahiko Yabuuchi, Minoru Masuda, Kikuo Imazumi, Hiroaki Hamano