Granted Patent
Utility
US 6,579,985 · App. 10/274,702
Preparation of codeine from morphine
Inventor:
Lloyd P. Hill
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Oct 21, 2002
Inventor
Lloyd P. Hill
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.