Granted Patent
Utility
US 5,392,768 · App. 08/011,351
Method and apparatus for releasing a controlled amount of aerosol medication over a selectable time interval
Inventors:
Eric T. Johansson, Carl Ritson, Reid M. Rubsamen
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Jan 29, 1993
Inventors
Eric T. Johansson
Carl Ritson
Reid M. Rubsamen
Assignee (at issue)
ARADIGM CORPORATION
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.