Granted Patent
Utility
US 5,348,954 · App. 07/690,975
Heterocyclic chelating agents
Inventors:
Torsten Almen, Arne Berg, Harald Dugstad, Jo Klaveness, Klaus D. Krautwurst, Pal Rongved
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: Jul 24, 1991
Inventors
Torsten Almen
Arne Berg
Harald Dugstad
Jo Klaveness
Klaus D. Krautwurst
Pal Rongved
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.