Granted Patent
Utility
US 5,874,062 · App. 08/445,299
Methods of computed tomography using perfluorocarbon gaseous filled microspheres as contrast agents
Inventor:
Evan C. Unger
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: May 19, 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.