Granted Patent
Utility
US 5,670,439 · App. 08/583,371
Vanadium-containing catalyst system
Inventors:
Linda N. Winslow, Raghu Menon
Patented Case
View Patent ↗
Granted: Sep 23, 1997
Filed: Jan 5, 1996
Inventors
Linda N. Winslow
Raghu Menon
Assignee (at issue)
Quantum Chemical 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.