Granted Patent
Utility
US 5,348,016 · App. 08/088,268
Apparatus for preparing gas filled liposomes for use as ultrasonic contrast agents
Inventors:
Evan C. Unger, Guanli Wu
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: Jul 7, 1993
Inventors
Evan C. Unger
Guanli Wu
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.