Patents by Inventor Masaya Kimoto

Masaya Kimoto 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 Cr-plating of mandrel bars, the mandrel bar, and process for producing seamless tubes using the method and the mandrel bar
    Patent number: 7814771
    Abstract: By using a plating bath containing chromic acid: 100 to 250 g/L, sulfate radical: 3.0 to 5.5 g/L, and a catalyst: 100 to 200% (a weight ratio to the chromic acid content) for conducting electroplating, a Cr-plating film which has an increased film crack density is formed on the surface of a mandrel bar base metal, whereby peeling-off of the Cr-plating film can be suppressed in mandrel mill rolling for extending the service life of the mandrel bar.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: October 19, 2010
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Naoya Hirase, Masaya Kimoto
  • METHOD FOR CR-PLATING OF MANDREL BARS, THE MANDREL BAR, AND PROCESS FOR PRODUCING SEAMLESS TUBES USING THE METHOD AND THE MANDREL BAR
    Publication number: 20100139352
    Abstract: By using a plating bath containing chromic acid: 100 to 250 g/L, sulfate radical: 3.0 to 5.5 g/L, and a catalyst: 100 to 200% (a weight ratio to the chromic acid content) for conducting electroplating, a Cr-plating film which has an increased film crack density is formed on the surface of a mandrel bar base metal, whereby peeling-off of the Cr-plating film can be suppressed in mandrel mill rolling for extending the service life of the mandrel bar.
    Type: Application
    Filed: February 15, 2010
    Publication date: June 10, 2010
    Applicant: SUMITOMO METAL INDUSTRIES, LTD.
    Inventors: Naoya Hirase, Masaya Kimoto