Patents by Inventor Ajit B. Menon

Ajit B. Menon 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).

  • Sterling silver manganese alloy compositions
    Patent number: 7128792
    Abstract: A unique manganese silver alloy composition is provided, which alloy exhibits the long desired properties of exceptional as-cast hardness and reversible heat treatability, in addition to offering reduced fire scale, reduced voids and porosity, reduced grain size, and reduced oxide formation when heated consisting essentially of the following parts by weight: about 92.5–92.8% silver, about 2.0–3.0% copper, about 2.0–3.0% zinc, about 0.03–0.05% indium, about 0.01–0.03% tin, about 0.20–0.50% boron/copper alloy (22% boron, 98.0% copper) about 0.50–0.90% silicon/copper alloy (10.0% silicon, 90.0% copper), and 0.01%–0.10% manganese “30” (0.30% of a manganese-copper alloy containing about 30% manganese and about 70% copper).
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: October 31, 2006
    Assignee: United Precious Metal Refining, Inc.
    Inventor: Ajit B. Menon
  • White gold alloy compositions
    Patent number: 6951588
    Abstract: A nickel- and palladium-free 14-karat white gold alloy composition consists of the following parts by weight: about 58.34% gold, about 35–40% silver, about 0.5–1.80% tin, and about 0–0.75% germanium.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: October 4, 2005
    Assignee: United Precious Metal Refining, Inc.
    Inventors: Melvin Bernhard, Ajit B. Menon