Method of dissolving a silver coating in a photo tank
US4021264A · kind A · utility
6Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1975 |
| Grant date | May 3, 1977 |
| Priority date | — |
| Expiry date | Oct 20, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C11/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Silver coatings in photographic tanks are dissolved with an aqueous solution of an alkali mono or di peroxysulfate, an alkali bisulfate and thiourea.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.