Granted Patent
Utility
US 5,213,951 · App. 07/729,475
Silver halide photographic material with reduced sensitizing dye stain
Inventor:
Gerolamo Delfino
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Jul 12, 1991
Inventor
Gerolamo Delfino
Assignee (at issue)
Minnesota Mining and Manufacturing 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.