Patents by Inventor Keiko Sugikawa

Keiko Sugikawa 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).

  • Plate for waterless lithographic
    Patent number: 6106997
    Abstract: Provided is a non-processed plate for waterless lithographic printing plates, which comprises a photosensitive layer, an ink-repellent layer and a protective layer as laminated in that order on a support and in which the photosensitive layer contains a polymerizable compound as obtained by reacting a glycidyl ether of a polyalcohol, such as hexitol or pentitol, with acrylic acid and/or methacrylic acid. The plate has good image reproducibility and good storage stability. Processing the plate gives waterless lithographic printing plates having good printing durability.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: August 22, 2000
    Assignee: Toray Industries, Inc.
    Inventors: Masahiro Oguni, Ken Kawamura, Keiko Sugikawa