Granted Patent
Utility
US 5,244,816 · App. 07/419,871
Method for purifying chelator conjugated compounds
Inventor:
Ramaswamy Subramanian
Patented Case
View Patent ↗
Granted: Sep 14, 1993
Filed: Oct 11, 1989
Inventor
Ramaswamy Subramanian
Assignee (at issue)
Akzo N.V.
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.