Granted Patent
Utility
US 4,366,232 · App. 06/235,388
Method for processing photographic silver dye-bleach materials and suitable preparations
Inventors:
Hansjorg Buser, Adolf Morand
Patented Case
View Patent ↗
Granted: Dec 28, 1982
Filed: Feb 17, 1981
Inventors
Hansjorg Buser
Adolf Morand
Assignee (at issue)
Ciba-Geigy
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.