Patents by Inventor Yoko Suzukawa

Yoko Suzukawa 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).

  • Diazo-containing photosensitive material
    Patent number: 6190823
    Abstract: A diazo-containing photosensitive material comprising a transparent support, and a diazo-containing photosensitive layer provided over a surface of the support and containing a binder, a diazo compound and a coupler, wherein the diazo compound is represented by the following formula: (wherein R1 and R2 stand, independently from each other, for a lower alkyl group and X stands for an anionic group), wherein the coupler comprises phenylphenol and 3,5-dihydroxy-4-bromobenzoic acid, and wherein the binder comprises a cellulose ester cross-linked with a lower-alkylated urea resin.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: February 20, 2001
    Assignee: Somar Corporation
    Inventors: Yoko Suzukawa, Nobue Abiko, Hiroshi Maruyama