Article having a decorative and protective coating
US5922478A · kind A · utility
17Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1997 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Apr 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12944
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An article is coated with a multi-layer coating comprising a nickel layer, a chrome layer, a refractory metal layer, preferably zirconium layer, a sandwich layer comprised of a plurality of alternating layers of a refractory metal compound and a refractory metal compound layer, preferably zirconium nitride layer, and a refractory metal oxide layer or a layer comprised of the reaction products of refractory metal, oxygen and nitrogen. The coating provides the color of polished brass to the article and also provides abrasion protection, corrosion protection, and improved acid resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.