Granted Patent
Utility
US 4,451,450 · App. 06/311,770
Cationic compounds useful for making radiodiagnostic agents
Inventor:
Vinayakam Subramanyam
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Oct 15, 1981
Inventor
Vinayakam Subramanyam
Assignee (at issue)
New England Nuclear Corporation
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.