Granted Patent
Utility
US 4,492,788 · App. 06/455,093
Partially deacylated ultra-high molecular weight poly(N-propionylethylenimines)
Inventor:
Robert S. Cooke
Patented Case
View Patent ↗
Granted: Jan 8, 1985
Filed: Jan 3, 1983
Inventor
Robert S. Cooke
Assignee (at issue)
ALLIED CONSULTING, 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.