Granted Patent
Utility
US 6,372,909 · App. 09/442,512
Synthesis of intermediates useful in preparing tricyclic compounds
Inventors:
Charles Bernard, Michael Casey, Frank Xing Chen, Denise C. Grogan, Marc Poirier, Robert Parry Williams, Yee-Shing Wong, George G. Wu
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Nov 18, 1999
Inventors
Charles Bernard
Michael Casey
Frank Xing Chen
Denise C. Grogan
Marc Poirier
Robert Parry Williams
Yee-Shing Wong
George G. Wu
Assignee (at issue)
SCHERING 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.