Patents by Inventor Takao Miyauchi

Takao Miyauchi 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).

  • Coloring by electrolysis of aluminum or aluminum alloys
    Patent number: 4128460
    Abstract: Coloring by electrolysis of aluminum or aluminum alloys comprising electrolyzing anodized aluminum or aluminum alloys without sealing the anodized surface thereof in an electrolytic bath containing an aliphatic sulfonic acid and a metal salt of such sulfonic acid.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: December 5, 1978
    Assignee: Daiwa Kasei Kenkyujo Kabushiki Kaisha
    Inventors: Hideo Nishimura, Seishi Masaki, Takao Miyauchi, Nariyoshi Kobayashi