Patents by Inventor Yukio Yabuta

Yukio Yabuta 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).

  • Method for preparing a support for a lithographic printing plate
    Patent number: 4294672
    Abstract: A method for preparing a support for a planographic printing plate using an electrolytic surface treatment of an aluminum plate is disclosed, wherein an alternating charge voltage is applied to the aluminum plate in an acidic electrolyzing bath, and the wave form representing the voltage includes an intermission of zero voltage in at least one of the anode or the cathode phases, and is such that the electric quantity for the anode phase is larger than the electric quantity for the cathode phase.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: October 13, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hisao Ohba, Kazutaka Oda, Yukio Yabuta, Azusa Ohashi