Patents by Inventor Harumasa Kitago

Harumasa Kitago 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).

  • Process for burning in planographic printing plates
    Patent number: 4063507
    Abstract: A process for producing a planographic printing plate comprising subjecting a light-sensitive planographic printing plate member to a burning in wherein the light-sensitive planographic printing plate member is treated with a solution containing at least one compound selected from the group consisting of boric acid, or the metal salts or ammonium salt thereof, prior to the burning in.
    Type: Grant
    Filed: June 3, 1976
    Date of Patent: December 20, 1977
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadao Toyama, Masaru Watanabe, Harumasa Kitago