Granted Patent
Utility
US 4,277,375 · App. 05/841,055
Catalytic oxide of molybdenum, vanadium, tantalum and optional 4th metal
Inventors:
Harry J. Decker, Erlind M. Thorsteinson
Patented Case
View Patent ↗
Granted: Jul 7, 1981
Filed: Oct 11, 1977
Inventors
Harry J. Decker
Erlind M. Thorsteinson
Assignee (at issue)
Union Carbide Corporation
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.