Reversibly age hardenable, palladium containing tarnish resistant sterling silver alloys
US9267191B2 · kind B2 · utility
3Cited by
21References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2013 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Feb 4, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C5/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A silver-based alloy composition which is soft and workable in an annealed condition, is hardenable through heat treatment, and is tarnish resistant. The preferred embodiment of the composition of the present invention includes a small percentage of palladium and a reduction from typical percentages of copper found in a sterling silver alloy. In one embodiment the silver-based alloy includes no copper at all.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.