Granted Patent
Utility
US 4,233,423 · App. 06/091,656
Stabilization of polymeric acetal carboxylates using an acetal
Inventors:
David R. Dyroff, Gary J. Lynch, Victor D. Papanu
Patented Case
View Patent ↗
Granted: Nov 11, 1980
Filed: Nov 5, 1979
Inventors
David R. Dyroff
Gary J. Lynch
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.