Patents by Inventor Shoji Ikada

Shoji Ikada 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).

  • Coated aluminum-zinc alloy plated sheet steel
    Patent number: 4637840
    Abstract: A coating process for aluminum-zinc alloy plated sheet steel provides an article having a surface of improved formability and enhanced corrosion resistance; appearance and paintability. The coating is applied in aqueous form at a prescribed pH value and dried. The aqueous coating contains a water dispersible or water soluble resin and hexavalent chromium in desired proportions.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: January 20, 1987
    Assignee: Nihon Parkerizing Co., Ltd.
    Inventors: Haruki Fujii, Shoji Ikada, Akimitsu Fukuda, Yasuo Okumura