Granted Patent
Utility
US 5,772,726 · App. 08/727,124
Method of separating vanadium from ash
Inventors:
Herbert P. Woods, Lionel M. Gillston
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Oct 8, 1996
Inventors
Herbert P. Woods
Lionel M. Gillston
Assignee (at issue)
Roy F. Weston, Inc.
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.