Granted Patent
Utility
US 4,906,786 · App. 07/275,969
Monomers and polyketal polymers
Inventor:
Donald R. Kelsey
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Nov 25, 1988
Inventor
Donald R. Kelsey
Assignee (at issue)
Amoco Corporation
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.