Patents by Inventor Thierry Cpponex

Thierry Cpponex 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 ALLOY
    Publication number: 20140271340
    Abstract: A silver alloy with exceptional resistance to both tarnishing and firestain includes at least 92.50% silver, from 0.70 to 1.65% germanium, from 1.30 to 1.80% indium, from 0.000 to 0.015% boron, not more than 1.0% palladium and not more than 0.20% copper.
    Type: Application
    Filed: October 16, 2012
    Publication date: September 18, 2014
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Thierry Cpponex, Kang Ping Haung