Patents by Inventor Masahiko Azuma

Masahiko Azuma 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).

  • Pt alloy for ornament
    Publication number: 20050284257
    Abstract: A novel alloy contains Pt as a principal component and also contains 0.1 to 15% Ru and 0.1 to 15% Ir in weight rate in Pt to overcome a problem in that Vickers hardness (Hv) of the conventional Pt-based alloys do not correspond to requirements in diversified ornaments because of their respective Vickers hardness (Hv): Hv 125 to 135 for Pt—Pu-based alloys and Hv 80 to 100 for Pt—Ir-based alloys.
    Type: Application
    Filed: September 2, 2005
    Publication date: December 29, 2005
    Inventors: Masami Osada, Masahiko Azuma, Shigeyasu Naruse