Patents by Inventor Shoichi Ote

Shoichi Ote 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).

  • Contact material for a vacuum circuit breaker and a method for manufacturing the same
    Patent number: 5853083
    Abstract: Interrupting and chopping characteristics of a Cu--Cr contact alloy are improved by rounding Cr particles to be spherical in the alloy. The Cr particles are rounded in the alloy by sintering raw Cr powder particles having an average particle diameter of less than 100 .mu.m at a temperature of 1,100.degree. C. or higher with Cu powder, or by sintering raw Cr powder particles having an average particle diameter of 100 to 150 .mu.m at a temperature of 1,200.degree. C. or higher with Cu powder.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: December 29, 1998
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Masayuki Furusawa, Hisaji Shinohara, Nobuyuki Odaka, Katsuhiko Taguchi, Yukio Osawa, Kazuro Shibata, Shoichi Ote