Granted Patent
Utility
US 4,874,873 · App. 07/290,219
Process for the preparation of 3-acylpyrrolidones
Inventor:
Frank X. Woolard
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Dec 27, 1988
Inventor
Frank X. Woolard
Assignee (at issue)
ICI Americas, 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.