Patents by Inventor Toshiyuki Matsumura

Toshiyuki Matsumura 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 composition and photosensitive lithographic printing plate comprising in admixture a tetrapolymer and a diazo resin
    Patent number: 5260161
    Abstract: Disclosed is a photosensitive composition comprising a diazo resin and a polymeric compound containing a structural unit represented by the following formula (I) in the molecule: ##STR1## wherein J represents a divalent linking group and n is 0 or 1. Disclosed is also a photosensitive lithographic printing using the photosensitive composition.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: November 9, 1993
    Assignees: Konica Corporation, Mitsubishi Kasei Corporation
    Inventors: Toshiyuki Matsumura, Shinichi Matsubara, Masafumi Uehara, Shinichi Bunya, Eriko Katahashi