Granted Patent
Utility
US 4,849,511 · App. 07/054,649
Technetium chelates to be used for determining the renal function
Inventor:
Alfons Verbruggen
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: May 26, 1987
Inventor
Alfons Verbruggen
Assignee (at issue)
MALLINCKRODT LLC
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.