Patents by Inventor Kazuyoshi Kaneda

Kazuyoshi Kaneda 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).

  • Method for producing colored anodic oxide films on aluminum based alloy materials
    Patent number: 4147598
    Abstract: Method for producing colored anodic oxide films on aluminum-based alloy materials comprising steps of subjecting the material having an oxide film thereon to a coloring electrolytic treatment in a bath of electrolyte containing water soluble nickel salt and boric acid. The material is applied with alternating voltage pulses having negative pulse duration which is the same as or greater than duration of positive voltage pulse.
    Type: Grant
    Filed: September 22, 1977
    Date of Patent: April 3, 1979
    Assignee: Riken Keikinzoku Kogyo Kabushiki Kaisha
    Inventors: Fumio Shigeta, Kazuyoshi Kaneda