Granted Patent
Utility
US 5,756,745 · App. 08/737,887
Preparation of nalbuphine having low levels of .beta.-epimer
Inventor:
Frank Kavka
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Nov 26, 1996
Inventor
Frank Kavka
Assignee (at issue)
MallincKrodt Medical, 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.