Granted Patent
Utility
US 4,990,683 · App. 07/141,740
Process for preparing 3-pyrrolidinols
Inventor:
Young S. Lo
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Jan 11, 1988
Inventor
Young S. Lo
Assignee (at issue)
A. H. Robins Company, Incorporated
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.