Patents by Inventor Yoshio Takezawa

Yoshio Takezawa 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).

  • Polyphenylene sulfide resin compositions and their moldings
    Patent number: 4690969
    Abstract: The polyphenylene sulfide resin compositions being composed of polyphenylene sulfide having a unit represented by general formula: ##STR1## and halogenized copper are excellent in weather ability and the supersonic and other welds of their moldings are exceptionally superior in strength.
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: September 1, 1987
    Assignee: Toray Industries, Inc.
    Inventors: Yoshio Takezawa, Tatsuo Akatsu