Patents by Inventor Kiyotaka Oku

Kiyotaka Oku 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).

  • Composite chromium plating film and sliding member having the same and method for manufacture thereof
    Patent number: 7318963
    Abstract: A composite chromium plating film containing hard particles in network-shaped microcracks, a surface-occupying ratio of the microcracks being 10 to 20% by area, a distribution density of the microcracks being 1,200 to 2,500/cm, and the amount of the above hard particles being 1 to 15% by mass per 100% by mass of the above entire plating film. This composite chromium plating film has excellent wear resistance and scuffing resistance with small attacking ability to a mating member.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: January 15, 2008
    Assignee: Kabushiki Kaisha Riken
    Inventors: Takeo Oshimi, Kiyotaka Oku, Katsumi Takiguchi
  • Composite chromium plating film and sliding member having the same and method for manufacture thereof
    Publication number: 20060040124
    Abstract: A composite chromium plating film containing hard particles in network-shaped microcracks, a surface-occupying ratio of the microcracks being 10 to 20% by area, a distribution density of the microcracks being 1,200 to 2,500/cm, and the amount of the above hard particles being 1 to 15% by mass per 100% by mass of the above entire plating film. This composite chromium plating film has excellent wear resistance and scuffing resistance with small attacking ability to a mating member.
    Type: Application
    Filed: January 28, 2005
    Publication date: February 23, 2006
    Applicant: Kabushiki Kaisha Riken
    Inventors: Takeo Oshimi, Kiyotaka Oku, Katsumi Takiguchi