Granted Patent
Utility
US 5,322,681 · App. 07/910,318
Chelating compounds
Inventor:
Jo Klaveness
Patented Case
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Granted: Jun 21, 1994
Filed: Jul 17, 1992
Inventor
Jo Klaveness
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.