Granted Patent
Utility
US 4,837,031 · App. 07/097,850
Compositions containing ibuprofen
Inventor:
Larry E. Denton
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: Sep 17, 1987
Inventor
Larry E. Denton
Assignee (at issue)
MALLINCKRODT LLC
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.