Patents by Inventor Hiromi Jouyama

Hiromi Jouyama 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 the production of living (co)polymers and use of the (co)polymers
    Patent number: 6762259
    Abstract: The purpose of the present invention is to provide polymerization catalyst which can produce quite efficiently (co)polymer having number average molecular weight and number of molecules which are accurately controlled in producing method of (co)polymer by the polymerization of polar unsaturated compound, and provide living polymerized (co)polymer obtained according to the producing method. For the purpose, polymerization catalyst composition which comprises the composition comprising organic oxysalt compound and hydroxycarbonyl compound having at least both an alcoholic hydroxyl group and a carbonyl group in the same molecule is provided and the polar unsaturated compound is polymerized by using the polymerization catalyst composition. The composition containing the obtained (co)polymer were able to provide thermosetting powder coating composition having particularly excellent characteristics.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: July 13, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Tadahito Nobori, Katsuhiko Funaki, Atsushi Shibahara, Makoto Suzuki, Kazumi Mizutani, Hiromi Jouyama, Isao Hara, Takaomi Hayashi, Shinji Kiyono, Setsuko Fujiyoshi, Hiroyuki Sakayama, Mitsuyuki Mizoguchi, Tsuyoshi Matsumoto, Yoshiharu Hirose
  • Process for the production of living (co)polymers and use of the (co)polymers
    Publication number: 20030023003
    Abstract: The purpose of the present invention is to provide polymerization catalyst which can produce quite efficiently (co)polymer having number average molecular weight and number of molecules which are accurately controlled in producing method of (co)polymer by the polymerization of polar unsaturated compound, and provide living polymerized (co)polymer obtained according to the producing method. For the purpose, polymerization catalyst composition which comprises the composition comprising organic oxysalt compound and hydroxycarbonyl compound having at least both an alcoholic hydroxyl group and a carbonyl group in the same molecule is provided and the polar unsaturated compound is polymerized by using the polymerization catalyst composition. The composition containing the obtained (co)polymer were able to provide thermosetting powder coating composition having particularly excellent characteristics.
    Type: Application
    Filed: June 12, 2002
    Publication date: January 30, 2003
    Inventors: Tadahito Nobori, Katsuhiko Funaki, Atsushi Shibahara, Makoto Suzuki, Kazumi Mizutani, Hiromi Jouyama, Isao Hara, Takaomi Hayashi, Shinji Kiyono, Setsuko Fujiyoshi