Granted Patent
Utility
US 5,571,497 · App. 08/468,056
Liposomes as contrast agents for ultrasonic imaging and apparatus and methods for preparing the same
Inventor:
Evan C. Unger
Patented Case
View Patent ↗
Granted: Nov 5, 1996
Filed: Jun 6, 1995
Inventor
Evan C. Unger
Assignee (at issue)
ImaRx Pharmaceutical Corp.
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.