Patents by Inventor Mitsuo Osada

Mitsuo Osada 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).

  • Electric contact materials
    Patent number: 4457780
    Abstract: The invention relates to electric contact materials for use in switches, such as moulded circuit breakers, air circuit breakers, magnetic switches, etc.The electric contact materials comprise 5-60 weight % iron group metals, 1-11 weight % graphite, 5-70 weight % refractory materials, and the residual part consisting of silver, said refractory materials being held in the state of dispersion in the iron group metals and/or silver, thereby providing welding resistance, wear resistance, and insulation resistance as well as high practical utility of low temperature rise.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: July 3, 1984
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Mitsuo Osada, Nobuhito Kuroishi, Yoshinari Amano, Akira Fukui