Patents by Inventor Naomi Sugita

Naomi Sugita 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).

  • Electrical contact material
    Patent number: 4292078
    Abstract: Electrical contact material of this invention consists of 10 to 20 percent by weight of nickel, 0.05 to 2 percent by weight of titanium boride and the balance tungsten. Conventionally, nickel-tungsten alloy shows poor mechanical properties (e.g. brittleness) although the alloy shows high oxidation resistance and can be produced in an inexpensive way. Inclusion of titanium boride greatly improves the mechanical properties of such alloy, thereby enabling the cheap production of electrical contact material which has sufficient practical use.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: September 29, 1981
    Assignee: Nippon Tungsten Co., Ltd.
    Inventors: Sinya Honda, Takeshi Komura, Naomi Sugita, Tatuya Okamoto