Granted Patent
Utility
US 5,658,550 · App. 08/251,484
Non cross-linked synthetic polymers as contrast media for magnetic resonance imaging
Inventor:
Evan C. Unger
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: May 31, 1994
Inventor
Evan C. Unger
Assignee (at issue)
ImaR.sub.x 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.