Patents by Inventor Sadao Yonehara

Sadao Yonehara 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 metal powder
    Patent number: 4437883
    Abstract: Metal powder having low oxygen and carbon contents and suitable for powder metallurgy may be obtained by using, as an atomizing medium, a special composition containing an alcohol having 1-4 carbon atoms and water as its essential components when impinging the atomizing medium against a molten metal in a state isolated from the ambient air to produce the metal powder.
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: March 20, 1984
    Assignees: Sumitomo Metal Industries, Ltd., Nippon Oil Co. Ltd.
    Inventors: Toshihiko Kubo, Minoru Ichidate, Toshiyuki Kawai, Sadao Yonehara, Yoshihisa Koiwai, Kazuhiko Endo