Patents by Inventor Daisaku Yamamoto

Daisaku Yamamoto 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 and manufacturing method thereof
    Patent number: 5770653
    Abstract: A resin composition includes a dicyclopentenyl-group containing unsaturated polyester resin, a phenothiazine derivative (a) and an anion producing compound (b). On the other hand, resin composition includes a thermosetting resin, a phenothiazine derivative (a), an anion producing compound (b) and a phosphorous ester (c). A manufacturing method of resin composition includes the step of obtaining a dicyclopentenyl-group-containing unsaturated polyester by polycondensing unsaturated polyester material including a compound having a dicyclopentenyl group, and the step of mixing a cross-linking monomer with the obtained dicyclopentenyl-group-containing unsaturated polyester, wherein the phenothiazine (a) and the anion producing compound (b) are added in at least one of those steps.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: June 23, 1998
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kenji Matsukawa, Toshio Hayashiya, Daisaku Yamamoto