Patents by Inventor Masayoshi Mashiko

Masayoshi Mashiko 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 producing rhodium-plated article with black color and wear resistance
    Patent number: 4486513
    Abstract: A process for improving the wear resistance and enhancing the black color of a black rhodium plated article which comprises subjecting the article to anodic electrolysis.
    Type: Grant
    Filed: March 24, 1982
    Date of Patent: December 4, 1984
    Assignees: Nippon Mining Co., Ltd., Nippon Metal Plating Co., Ltd.
    Inventors: Masayoshi Mashiko, Keijiro Suzuki