Patents by Inventor Makoto Nishiya

Makoto Nishiya 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).

  • Ag alloy of high discoloration resistance
    Patent number: 5021214
    Abstract: Ag allow generally used for decorative purposes such as silverware and accessories, including In and Al as a substitute for conventionally used Pd provides the products with high discoloration resistance and elegant tint inherent to Ag. Additional content of Cu further improves mechanical properties of the products.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: June 4, 1991
    Assignee: Kabushiki Kaisha Zero One
    Inventors: Hiroshi Sasaki, Makoto Nishiya