Granted Patent
Utility
US 6,599,284 · App. 09/728,859
Osmotic device having a preformed passageway that increases in size
Inventor:
Joaquina Faour
Patented Case
View Patent ↗
Granted: Jul 29, 2003
Filed: Nov 30, 2000
Inventor
Joaquina Faour
Assignee (at issue)
Osmotica Corp.
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.