Granted Patent
Utility
US 5,017,690 · App. 07/392,696
Deblocking N-formyl aspartame compounds
Inventor:
Jennifer M. Quirk
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Aug 11, 1989
Inventor
Jennifer M. Quirk
Assignee (at issue)
W.R. Grace & Co. Conn.
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.