Silver colored alloy with low percentage of nickel and copper
US5817195A · kind A · utility
16Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1996 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Nov 19, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C5/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A silver colored alloy highly tarnish resistant, sterling silver is provided or having included therein: 90% to 92.5% by weight Silver; 5.75% to 7.5% by weight Zinc; 0.25% to less than 1% by weight Copper; 0.25% to 0.5% by weight Nickel; 0.1% to 0.25% by weight Silicon; and 0.0% to 0.5% by weight Indium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.