Patents by Inventor Toshiyuka Sekiya

Toshiyuka Sekiya 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).

  • Aqueous developer for lithographic printing plates
    Patent number: 6316171
    Abstract: The invention is directed to an aqueous developing composition which is useful in developing negative-working lithographic printing plates. More particularly, the developing composition includes an organic solvent, a surfactant, and a gelatin, which is present as more than 3% by weight of the total developer.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: November 13, 2001
    Assignee: Fuji Photo Film B.V.
    Inventors: Toshiyuka Sekiya, Ronald Wiegers, Yuzo Toda