Granted Patent
Utility
US 4,382,082 · App. 06/333,245
Recovery of cobalt values by absorption from ammoniacal solution
Inventors:
William C. Laughlin, William K. Tolley
Patented Case
View Patent ↗
Granted: May 3, 1983
Filed: Dec 21, 1981
Inventors
William C. Laughlin
William K. Tolley
Assignee (at issue)
UOP 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.