Granted Patent
Utility
US 4,917,896 · App. 06/932,709
Penetration enhancers for transdermal delivery of systemic agents
Inventors:
James V. Peck, Gevork Minaskanian
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Nov 19, 1986
Inventors
James V. Peck
Gevork Minaskanian
Assignee (at issue)
Nelson Research & Development Company
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.