Patents by Inventor Ikuo Jitsuhara

Ikuo Jitsuhara 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).

  • Metallic sheet having rust-preventive organic coating thereon, process for the production thereof and treating fluid therefor
    Patent number: 6254980
    Abstract: A metal plate having a rust preventive organic layer, said rust-preventive organic layer being a colloid or micelle of a slightly water soluble organic corrosion inhibitor as an organic layer mixed with and dispersed in a matrix resin, its production process and a treatment liquid in which it is processed.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: July 3, 2001
    Assignee: Nippon Steel Corporation
    Inventors: Kenichiro Tadokoro, Hiromasa Shoji, Tadashi Sakon, Ikuo Jitsuhara, Makoto Yamasaki
  • Surface-treated steel sheet with resin-based chemical treatment coating and process for its production
    Patent number: 5897948
    Abstract: A surface-treated steel sheet with a resin-based chemical treatment coating on the steel sheet surface, having poorly soluble chromate colloid particles finely dispersed in a matrix resin such that the mean particle size of the dispersed particles is under 1 .mu.m.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: April 27, 1999
    Assignee: Nippon Steel Corporation
    Inventors: Tadashi Sakon, Ikuo Jitsuhara, Kenichiro Tadokoro, Maki Sekoguchi, Hiromasa Shoji, Makoto Yamazaki