Granted Patent
Utility
US 5,674,468 · App. 08/301,002
Contrast agents comprising gas-containing or gas-generating polymer microparticles or microballoons
Inventors:
Jo Klaveness, Pal Rongved, Jan Solberg, Per Strande, Unni Nordby Wiggen, Keith Redford
Patented Case
View Patent ↗
Granted: Oct 7, 1997
Filed: Sep 6, 1994
Inventors
Jo Klaveness
Pal Rongved
Jan Solberg
Per Strande
Unni Nordby Wiggen
Keith Redford
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.