Brightening additive for tungsten alloy electroplate
US5525206A · kind A · utility
6Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1995 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Feb 1, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/56
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A brightening agent for use in tungsten alloy electroplating baths to replace hexavalent chromium plating or other hard lubrous coatings. Baths of the present invention comprise an effective amount of tungsten ions; an effective amount of a metal ion compatible with tungsten; one or more complexing agents; and an effective amount of a bath soluble alkoxylated hydroxy alkyne for providing brightening of a tungsten alloy electroplate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.