Patents by Inventor Koichi Sumi

Koichi Sumi 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).

  • EXTERNAL PREPARATION CONTAINING PANTETHINE PHOSPHATE ESTER
    Publication number: 20120189566
    Abstract: A pantethine phosphate ester represented by the following formula (1) or formula (2) exhibits superior tyrosinase inhibitory effect and melanin production inhibitory effect.
    Type: Application
    Filed: September 6, 2010
    Publication date: July 26, 2012
    Applicant: DAIICHI FINE CHEMICAL CO., LTD.
    Inventors: Koichi Wada, Koichi Sumi, Shihoko Shimomura
  • Flame retarding resin composition
    Patent number: 5605962
    Abstract: A flame retarding resin composition comprising 100 parts by weight of a specific rubber-reinforced resin, 1-200 parts by weight of a phenol resin, 1-200 parts by weight of an organic phosphorus compound, 1-50 parts by weight of a nitrogen-containing compound, 0-40 parts by weight of an oligomer-type polymer containing a functional group, 0-30 parts by weight of a metal compound, a silicon compound, and/or polytetrafluoroethylene, and 0-300 parts by weight of a styrene-type resin. The composition has high impact resistance, excellent heat resistance, and a superior self-fire-extinguishing characteristic.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: February 25, 1997
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Masanori Suzuki, Hiroyuki Itoh, Koichi Sumi, Yoichi Kamoshida, Shigeru Abe, Seiichi Atomori, Tateki Furuyama