Granted Patent
Utility
US 5,128,124 · App. 07/660,226
Transdermal therapeutic system for active ingredient combinations
Inventors:
Peter Fankhauser, Lotte Schenkel
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Feb 22, 1991
Inventors
Peter Fankhauser
Lotte Schenkel
Assignee (at issue)
Ciba-Geigy
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.