Patents by Inventor Sadatsu Yamaguchi

Sadatsu Yamaguchi 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).

  • Fluorine-containing copolymer
    Patent number: 4546157
    Abstract: A fluorine-containing copolymer comprising monomeric units of(a) from 95.8 to 80% by weight of tetrafluoroethylene,(b) from 4 to 14% by weight of hexafluoropropene, and(c) from 0.2 to 6% by weight of perfluorovinyl ether of the formula: ##STR1## wherein n is an integer of 1 to 4, and m is an integer of 0 to 3, and having excellent stress crack resistance when formed into a molded article.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: October 8, 1985
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Tsuneo Nakagawa, Sadatsu Yamaguchi, Toshihiko Amano, Kohzoh Asano