Patents by Inventor Hiroji Tokunaga

Hiroji Tokunaga 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).

  • Support for lithographic printing plate and presensitized plate
    Patent number: 6843175
    Abstract: A support for a lithographic printing plate, wherein scum resistance is improved when processed into a lithographic printing plate by performing treatment for water wettablity and, in addition, press life is excellent. A support for a lithographic printing plate, which is obtained by performing at least anodizing treatment and silicate treatment on an aluminum plate, wherein a ratio of the number of atoms of alkali-earth metal and silicon existing on a surface thereof is 0.1 to 0.95.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: January 18, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Ikuo Kawauchi, Tadashi Endo, Hiroji Tokunaga
  • Support for lithographic printing plate and presensitized plate
    Publication number: 20030084807
    Abstract: A support for a lithographic printing plate, wherein scum resistance is improved when processed into a lithographic printing plate by performing treatment for water wettablity and, in addition, press life is excellent. A support for a lithographic printing plate, which is obtained by performing at least anodizing treatment and silicate treatment on an aluminum plate, wherein a ratio of the number of atoms of alkali-earth metal and silicon existing on a surface thereof is 0.1 to 0.95.
    Type: Application
    Filed: April 9, 2002
    Publication date: May 8, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Ikuo Kawauchi, Tadashi Endo, Hiroji Tokunaga