Granted Patent
Utility
US 4,292,202 · App. 06/105,366
Preparation of a vanadium(IV)bis(metaphosphate) hydrocarbon oxidation catalyst containing a group VIB metal promoter
Inventors:
James C. Vartuli, Lee R. Zehner
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Dec 19, 1979
Inventors
James C. Vartuli
Lee R. Zehner
Assignee (at issue)
Atlantic Richfield Company
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.