Patents by Inventor Shinkichi Koike

Shinkichi Koike 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).

  • Process for producing low P chromium-containing steel
    Patent number: 4525209
    Abstract: A process for producing a low P chromium-containing steel in an AOD vessel from a high P chromium-containing molten pig iron comprising a first stage of recarborization, desiliconzation and temperature raising, a second stage of dephosphorization with slag, which may be repeated, and a third stage of conventional refining.
    Type: Grant
    Filed: May 2, 1984
    Date of Patent: June 25, 1985
    Assignees: Pacific Metals & Co. Ltd., Nisshin Steel Co. Ltd.
    Inventors: Takashi Yamauchi, Shigeaki Maruhashi, Shinkichi Koike, Keizo Yamada
  • Method for producing ferro-nickel shots
    Patent number: 4402884
    Abstract: A method for producing ferro-nickel shots which comprises adding a manganese source to molten ferro-nickel, pouring the molten ferro-nickel containing manganese onto a rotating disc to granulate the molten ferro-nickel stream, and cooling the granules thus obtained in water.
    Type: Grant
    Filed: June 2, 1981
    Date of Patent: September 6, 1983
    Assignee: Pacific Metals Co., Ltd.
    Inventors: Shinkichi Koike, Akira Kimura, Toru Hikage, Sadao Sugiura