Granted Patent
Utility
US 6,270,787 · App. 09/217,823
Osmotic delivery system with membrane plug retention mechanism
Inventor:
Rupal A. Ayer
Patented Case
View Patent ↗
Granted: Aug 7, 2001
Filed: Dec 22, 1998
Inventor
Rupal A. Ayer
Assignee (at issue)
ALZA 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.