Granted Patent
Utility
US 5,378,475 · App. 07/658,695
Sustained release drug delivery devices
Inventors:
Thomas J. Smith, Paul Ashton, Paul A. Pearson
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: Feb 21, 1991
Inventors
Thomas J. Smith
Paul Ashton
Paul A. Pearson
Assignee (at issue)
UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION
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.