Granted Patent
Utility
US 4,707,532 · App. 07/042,915
Copolymerization of blocked polyisocyanates with bicyclic amide acetals
Inventor:
Anil B. Goel
Patented Case
View Patent ↗
Granted: Nov 17, 1987
Filed: Apr 27, 1987
Inventor
Anil B. Goel
Assignee (at issue)
Ashland Oil, Inc.
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.