Granted Patent
Utility
US 5,374,243 · App. 08/085,920
Oxygen permeable bag containing oxygen-transporting perfluorochemical for providing oxygen internally to mammals
Inventors:
John J. Whalen, Charles M. Heldebrandt
Patented Case
View Patent ↗
Granted: Dec 20, 1994
Filed: Jul 6, 1993
Inventors
John J. Whalen
Charles M. Heldebrandt
Assignee (at issue)
Alpha Therapeutic 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.