Silver colored alloy with low percentage copper
US5882441A · kind A · utility
16Cited by
3References
4Claims
0Family size
Inventor
Key dates
| Filing date | Aug 1, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Aug 1, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C5/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A silver colored alloy, highly tarnish resistant, corrosion resistant and brittleness free is provided. The alloy includes 90% to 94% by weight silver, 3.50% to 7.35% by weight zinc, 1% to 3% by weight copper, and 0.1% to 2.5% by weight silicon. The alloy is suitable for rings, earrings, bangles and other jewelry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.