Prevention of metal tarnish
US4468417A · kind A · utility
1Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1982 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Jan 29, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B17/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Metals are protected against tarnishing by application of a protein-containing solution to the metal surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.