Granted Patent
Utility
US 4,229,213 · App. 06/036,486
Hydrometallurgical recovery of nickel values
Inventor:
Yoon T. Auck
Patented Case
View Patent ↗
Granted: Oct 21, 1980
Filed: May 7, 1979
Inventor
Yoon T. Auck
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.