Granted Patent
Utility
US 4,931,441 · App. 07/269,130
Stabilized aqueous leucovorin calcium compositions
Inventor:
Richard P. Lawrence
Patented Case
View Patent ↗
Granted: Jun 5, 1990
Filed: Nov 9, 1988
Inventor
Richard P. Lawrence
Assignee (at issue)
Luitpold Pharmaceuticals, 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.