Patents by Inventor Ritsuo Okabe

Ritsuo Okabe 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).

  • Iron base powder mixture and method
    Patent number: 5135566
    Abstract: An iron base powder mixture for powder metallurgy, comprising an iron based powder and an alloying powder and/or a powder for improving machinability, wherein the alloying powder and/or the powder for improving machinability are adhered to the surface of the ferrous powder by means of a melted-together binder composed of an oil and a metal soap or wax.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: August 4, 1992
    Assignee: Kawasaki Steel Corporation
    Inventors: Ichio Sakuranda, Ritsuo Okabe, Takao Omura, Yoshisato Kiyota, Shigeaki Takajo
  • Method of preparing iron base powder mixture for pm
    Patent number: 4946499
    Abstract: An iron base powder mixture for powder metallurgy, comprising an iron based powder and an alloying powder and/or a powder for improving machinability, wherein the alloying powder and/or the powder for improving machinability are adhered to the surface of the ferrous powder by means of a melted-together binder composed of an oil and a metal soap or wax.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: August 7, 1990
    Assignee: Kawasaki Steel Corp.
    Inventors: Ichio Sakuranda, Ritsuo Okabe, Takao Omura, Yoshisato Kiyota, Shigeaki Takajo