EP 0222252 A3 19880622 - PROCESS AND DEVICE FOR MAKING PHOTOGRAPHIC SILVER HALIDE EMULSIONS
Title (en)
PROCESS AND DEVICE FOR MAKING PHOTOGRAPHIC SILVER HALIDE EMULSIONS
Publication
Application
Priority
DE 3539845 A 19851109
Abstract (en)
[origin: US4758505A] Silver halide emulsions are prepared by precipitation, transfer of the silver halide emulsion from the precipitation chamber into a separate circuit comprising a cleaning stage for the removal of dispersion medium and compounds soluble therein and exit into a collecting vessel.
IPC 1-7
IPC 8 full level
B01F 3/08 (2006.01); G03C 1/005 (2006.01); G03C 1/015 (2006.01)
CPC (source: EP US)
B01F 23/49 (2022.01 - EP US); G03C 1/015 (2013.01 - EP US); G03C 2001/0157 (2013.01 - EP US)
Citation (search report)
- [YD] US 4334012 A 19820608 - MIGNOT ANDRE G E
- [Y] DE 2444159 B1
- [A] FR 687074 A 19300804
- [AD] RESEARCH DISCLOSURE, Nr. 102, Oktober 1972, Seiten 7-9, Nr. 10208, Havant, Hampshire, GB; "Purification and concentration of silver halide emulsions"
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0222252 A2 19870520; EP 0222252 A3 19880622; DE 3539845 A1 19870514; JP S62113137 A 19870525; US 4758505 A 19880719
DOCDB simple family (application)
EP 86114942 A 19861028; DE 3539845 A 19851109; JP 26490786 A 19861108; US 92396786 A 19861028