Granted Patent
Utility
US 6,127,542 · App. 09/399,667
Tetracyclic derivatives, process of preparation and use
Inventor:
Alain Claude-Marie Daugan
Patented Case
View Patent ↗
Granted: Oct 3, 2000
Filed: Sep 21, 1999
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.