Sealing and densifying chrome plated metal parts
US3985916A · kind A · utility
15Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1975 |
| Grant date | Oct 12, 1976 |
| Priority date | — |
| Expiry date | Oct 23, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D5/48
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Porous chrome plated surfaces are densified by treating the surface with a chromic acid solution and heating the treated surface to convert the chromic acid to chromic oxide. Repeated treating and conversion steps may be used to completely fill the pores and cracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.