Granted Patent
Utility
US 5,332,420 · App. 08/021,901
Chemical process of separating metals from an organic complex
Inventors:
Domenico C. Cupertino, Peter A. Tasker
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Feb 24, 1993
Inventors
Domenico C. Cupertino
Peter A. Tasker
Assignee (at issue)
Zeneca Limited
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.