Granted Patent
Utility
US 5,817,291 · App. 08/761,367
Method of ultrasonic imaging comprising administering biocompatible spheres or particles
Inventor:
Ulf Schroder
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Dec 9, 1996
Inventor
Ulf Schroder
Assignee (at issue)
NYCOMED IMAGING AS
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.