Granted Patent
Utility
US 6,521,641 · App. 09/591,253
Male anti-fertility agents
Inventors:
Elliott S. Klein, Yang-Dar Yuan, Roshantha A. Chandraratna
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Jun 9, 2000
Inventors
Elliott S. Klein
Yang-Dar Yuan
Roshantha A. Chandraratna
Assignee (at issue)
Allergan, Inc.
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.