Granted Patent
Utility
US 6,355,657 · App. 09/475,094
System for percutaneous delivery of opioid analgesics
Inventor:
David W. Osborne
Patented Case
View Patent ↗
Granted: Mar 12, 2002
Filed: Dec 30, 1999
Inventor
David W. Osborne
Assignee (at issue)
Atrix Laboratories, 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.