Granted Patent
Utility
US 4,122,261 · App. 05/812,834
Polycyclic iminoisoindoline chelates
Inventors:
Nathan N. Crounse, Nicholas A. Ambrosiano
Patented Case
View Patent ↗
Granted: Oct 24, 1978
Filed: Jul 5, 1977
Inventors
Nathan N. Crounse
Nicholas A. Ambrosiano
Assignee (at issue)
Sterling Drug, Inc.
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.