Photographic bleach-fixing compositions
US4717649A · kind A · utility
7Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Apr 18, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Fast acting and ecologically advantageous compositions for the bleach-fixing of photographic elements are comprised of an aqueous alkaline solution of a peroxy compound and an ammonium or amine salt of a weak acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.