Granted Patent
Utility
US 5,667,798 · App. 08/477,914
Transdermal drug delivery system
Inventors:
Robert B. Royds, John Lim, Joel D. Rosen
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Jun 7, 1995
Inventors
Robert B. Royds
John Lim
Joel D. Rosen
Assignee (at issue)
Harrogate Holdings, Ltd. Co.
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.