Patents by Inventor Tadashi Akama

Tadashi Akama 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).

  • Photosensitive polymer composition
    Patent number: 4170481
    Abstract: A photosensitive polymer composition comprising(1) either a(a) soluble polymer and photopolymerizable ethylenically unsaturated compound or(b) soluble polymer having photopolymerizable ethylenically unsaturated groups in the polymer chain, and(2) about 0.001 to 10 parts, by weight, of ascorbic acids and/or their derivatives to about 100 parts, by weight, of 1(a) or 1(b).
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: October 9, 1979
    Assignee: Toray Industries, Inc.
    Inventors: Tadashi Akama, Kuniyuki Sakai