Granted Patent
Utility
US 5,597,686 · App. 08/429,989
Photographic silver halide emulsion containing contrast improving dopants
Inventors:
Gladys L. MacIntyre, Eric L. Bell
Patented Case
View Patent ↗
Granted: Jan 28, 1997
Filed: Apr 27, 1995
Inventors
Gladys L. MacIntyre
Eric L. Bell
Assignee (at issue)
EASTMAN KODAK COMPANY
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.