Patents by Inventor Shigeo Shiihashi

Shigeo Shiihashi 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).

  • Polyacetal composition
    Patent number: 5043399
    Abstract: There are disclosed a polyacetal composition comprising(A) 70-97% by weight of a polyacetal and(B) 30-3% by weight of a transparent polyamide elastomer represented by the general formula ##STR1## in which PA and G represent the groups specified as in the body of the text;said polyamide elastomer exhibiting a relative viscosity of at least 1.5 in m-cresol at 30.degree. C. and at a polymer concentration of 0.5 g/dl anda 1-mm thick sheet of the polyamide elastomer having a haze of not more than 75%, and streched and oriented polyacetal material using it.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: August 27, 1991
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Yoshio Suzuki, Tamikuni Komatsu, Mikihiko Nakamura, Shigeo Shiihashi