Granted Patent
Utility
US 6,831,089 · App. 10/266,505
Muscarinic antagonists
Inventors:
Yuguang Wang, Samuel Chackalamannil
Patented Case
View Patent ↗
Granted: Dec 14, 2004
Filed: Oct 8, 2002
Inventors
Yuguang Wang
Samuel Chackalamannil
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.