Patents by Inventor Yoshihiro Imoto

Yoshihiro Imoto 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 locally solution-treating stainless material
    Patent number: 4168190
    Abstract: A method and apparatus for treating stainless steel material to reduce the carbon precipitation of the grain boundaries of the material as a result of temperature elevation due to welding, mechanical bending, or the like. The treatment includes the rapid heating of the material to the temperature at which the carbon will enter into solid solution followed by a rapid quenching of the heated material. Beneficial stress modifications are also achieved.
    Type: Grant
    Filed: April 27, 1977
    Date of Patent: September 18, 1979
    Assignee: Daiichi Koshuha Kogyo Kabushiki Kaisha
    Inventors: Toshiyuki Eguchi, Yoshihiro Imoto, Kouji Kurose, Masanori Terasaki