Patents by Inventor Motoyuji Yamato

Motoyuji Yamato 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).

  • Dicyclopentadiene activation method and polymerization composition
    Patent number: 5378783
    Abstract: A highly polymerizable dicyclopentadiene (DCPD) monomer composition is obtained. The dicyclopentadiene so obtained is highly suitable for ring-opening polymerization by metathesis catalysts. The active DCPD yields articles with excellent physical properties upon in-mold polymerization.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: January 3, 1995
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Kin-ichi Okumura, Masao Torii, Hirotoshi Tanimoto, Motoyuji Yamato