Granted Patent
Utility
US 4,269,809 · App. 06/105,341
Recovery in titanium metal values by solvent extraction
Inventors:
William K. Tolley, William C. Laughlin
Patented Case
View Patent ↗
Granted: May 26, 1981
Filed: Dec 19, 1979
Inventors
William K. Tolley
William C. Laughlin
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.