Granted Patent
Utility
US 5,255,683 · App. 07/816,640
Methods of and systems for examining tissue perfusion using ultrasonic contrast agents
Inventor:
Mark Monaghan
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: Dec 30, 1991
Inventor
Mark Monaghan
Assignee (at issue)
Sound Science Limited Partnership
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.