Patents by Inventor Shigeo Shibuya

Shigeo Shibuya 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).

  • Silver-oxide electric contact material for use in switches for high current
    Patent number: 5451272
    Abstract: A silver-oxide material for electric contacts of high-current switches, having excellent deposition resistance and consumption resistance. The material is formed by subjecting to an internal oxidation treatment an Ag alloy consisting essentially, by weight %, of:Sn: 5.1-8.5%;In: 1.7-3.2%;Te: 0.1-0.6%; andAg and inevitable impurities: the balance. If required, at least one of the following elements may be added:Ni: 0.05-0.2%; andCd: 0.3-0.8%.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: September 19, 1995
    Assignee: Mitsubishi Materials Corporation
    Inventors: Yuzo Uemura, Shigeo Shibuya, Manabu Aoki