Process for producing by electrodeposition bright deposits of gold and its alloys
US4073700A · kind A · utility
3Cited by
6References
8Claims
0Family size
Inventors
Key dates
| Filing date | Jul 2, 1976 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | Jul 2, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/48
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
This invention discloses a process for producing by electrodeposition bright deposits of gold and its alloys at greatly increased speeds and with an evenness of distribution significantly greater than conventional baths resulting in considerable savings in the average amount of gold deposited to meet a minimum thickness specification. The deposition of gold is promoted and enhanced by the presence of chelating agents characterized as carboxymethylated aminomethylene phosphonic acids and its salts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.