Granted Patent
Utility
US 5,859,006 · App. 08/669,389
Tetracyclic derivatives; process of preparation and use
Inventor:
Alain Claude-Marie Daugan
Patented Case
View Patent ↗
Granted: Jan 12, 1999
Filed: Jul 16, 1996
Inventor
Alain Claude-Marie Daugan
Assignee (at issue)
ICOS CORPORATION
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.