Granted Patent
Utility
US 4,308,328 · App. 06/160,532
UV-Stabilized photographic elements
Inventors:
Ival O. Salyer, Arthur M. Usmani
Patented Case
View Patent ↗
Granted: Dec 29, 1981
Filed: Jun 18, 1980
Inventors
Ival O. Salyer
Arthur M. Usmani
Assignee (at issue)
Monsanto 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.