Patents Examined by George Wyszomiersk
  • Silver-colored alloy with low percentages of copper and zinc
    Patent number: 7128871
    Abstract: A silver-colored, tarnish-resistant, corrosion-resistant alloy is provided. The alloy includes 92.5–95% silver, combined with a master alloy of 24–34% zinc; 60–74% copper; 0.5–1.8% silicon; 0.0–8.0% tin, or 0.0–1.5% indium, wherein percentages are in terms of weight. The alloy can be used for jewelry items, tableware items, dental items or other items that should resist tarnishing or corrosion and which require a non-brittle alloy.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: October 31, 2006
    Assignee: Sterilite LLC
    Inventor: Daniel Davitz