Granted Patent
Utility
US 4,219,437 · App. 06/008,899
Copolymers of keto dicarboxylates
Inventor:
Victor D. Papanu
Patented Case
View Patent ↗
Granted: Aug 26, 1980
Filed: Feb 2, 1979
Inventor
Victor D. Papanu
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.