Granted Patent
Utility
US 5,141,845 · App. 07/607,560
Process for the spectral sensitization of photographic silver halide emulsions and products thereof
Inventors:
Pierre-Alain Brugger, Rolf Steiger
Patented Case
View Patent ↗
Granted: Aug 25, 1992
Filed: Oct 31, 1990
Inventors
Pierre-Alain Brugger
Rolf Steiger
Assignee (at issue)
Ilford AG
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.