Patents by Inventor Hirozo Sugahara

Hirozo Sugahara 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).

  • Process for production of modified polypropylene
    Patent number: 4078017
    Abstract: A process for producing modified polypropylene comprising reacting polypropylene with a liquid rubber and maleic anhydride in a solvent in the presence of a radical generator.
    Type: Grant
    Filed: March 3, 1977
    Date of Patent: March 7, 1978
    Assignee: Idemitsu Kosan Company, Ltd.
    Inventors: Kikuo Nagatoshi, Toshimichi Ito, Atsunobu Sakoda, Akio Inayoshi, Noriki Fujimoto, Hidehiko Kaji, Hirozo Sugahara
  • Process of producing acenaphthenes
    Patent number: 4073818
    Abstract: Acenaphthenes are obtained by reacting cyclododecatriene in the presence of a specified catalyst. Acenaphthenes are raw materials for jet fuel, synthetic resin, dye, bacteriocide, insecticide, synthetic lubricant oil, additives for various lubricating oils, etc.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: February 14, 1978
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Ichikawa, Michio Sugimoto, Shigeyoshi Mizokami, Kosaku Honna, Hirozo Sugahara
  • Method of producing unsaturated carbonyl compounds
    Patent number: 4055721
    Abstract: Unsaturated carbonyl compounds such as methyl methacrylate are produced by reacting an acetylene, CO and water or an alcohol in the presence of a catalyst comprising a Pd(II) compound and a compound R"X where R" is H, lower alkyl or aryl and X is halogen, and in the presence of an oxygen-containing compound other than water or an alcohol.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: October 25, 1977
    Assignee: Idemitsu Kosan Company, Ltd.
    Inventors: Noboru Kawata, Kosaku Honna, Hirozo Sugahara
  • Adamantane-piperazine derivatives
    Patent number: 4001223
    Abstract: Adamantane derivatives of this invention are represented by the formula ##STR1## wherein R.sub.1 is ##STR2## or --CH.sub.2 -- and R.sub.2 is ##STR3## or --CH.sub.2 CH=CH--. Said derivatives are cerebral vasodilators or intermediates for the same.
    Type: Grant
    Filed: December 16, 1975
    Date of Patent: January 4, 1977
    Assignees: Idemitsu Kosan Co., Ltd., Nippon Chemiphar Co., Ltd.
    Inventors: Michio Sugimoto, Fumitada Yamamoto, Kosaku Honna, Konomu Kurisaki, Hirozo Sugahara, Kiyoshi Watanabe, Yasuo Fujimoto, Syoji Ryu