Yellow gold alloy
US4557895A · kind A · utility
5Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1984 |
| Grant date | Dec 10, 1985 |
| Priority date | — |
| Expiry date | Dec 10, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C30/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A yellow gold alloy which resembles 10 karat gold in appearance and physical properties but has a gold content substantially less than 10 karat gold. The alloy consists essentially of 11% to 16% by weight gold, 28% to 34% by weight silver, 30% to 38% by weight copper, 8% to 12% by weight palladium, 7% to 10% by weight zinc, 0.2% to 0.4% silicon, and about 0.02% boron, and is particularly well suited for use in the manufacture of rings and other jewelry articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.