Granted Patent
Utility
US 5,204,086 · App. 07/902,810
X-ray contrast agent
Inventor:
Knut Wille
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Jun 25, 1992
Inventor
Knut Wille
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.