Granted Patent
Utility
US 5,209,720 · App. 07/716,793
Methods for providing localized therapeutic heat to biological tissues and fluids using gas filled liposomes
Inventor:
Evan C. Unger
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Jun 18, 1991
Inventor
Evan C. Unger
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.