Granted Patent
Utility
US 5,320,731 · App. 08/016,888
Iontophoresis device for transcutaneous administration of a given total quantity of an active principle to a subject
Inventors:
Daniel Muller, Jean-Pierre Simonin
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Feb 12, 1993
Inventors
Daniel Muller
Jean-Pierre Simonin
Assignees (at issue)
Societe Nationale Elf Aquitaine
Societe Anonyme: Elf Sanofi
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.