Granulated photographic fixative and its preparation
US5055384A · kind A · utility
70Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1990 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Jun 13, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C5/38
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A granulated photographic fixative or bleach fixative composed of grains containing both a thiosulphate and a disulphite is mechanically stable, dust free and freely pourable, will keep indefinitely and is distinguished by its great speed of solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.