Granted Patent
Utility
US 4,874,475 · App. 07/242,570
Molten salt extractive distillation process for zirconium-hafnium separation
Inventors:
David F. McLaughlin, Richard Stoltz
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Sep 12, 1988
Inventors
David F. McLaughlin
Richard Stoltz
Assignee (at issue)
Westinghouse Electric Company 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.