Patents by Inventor Shugo Watanabe

Shugo Watanabe 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).

  • Precipitation-hardenable, nitrided aluminum alloys and nitrided mother alloys therefor
    Patent number: 4060411
    Abstract: Precipitation-hardenable, nitrided aluminum alloys are produced by forming an alloy of aluminum metal at a temperature up to about 800.degree. C with a nitrided mother alloy of a specified composition which has been nitrided at a temperature of 800.degree. to 1,200.degree. C. The aluminum alloys are made precipitation-hardenable by the incorporation therein of a precipitation-hardening component such as copper, zinc and/or magnesium, and the precipitation-hardening component can be contained in the mother alloy undergoing nitridation.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: November 29, 1977
    Assignee: Mamiya Koki Kabushiki Kaisha
    Inventors: Mituhiro Goto, Isao Hashimoto, Shugo Watanabe, Koji Itabashi