Granted Patent
Utility
US 4,492,587 · App. 06/392,661
Method of fusing vanadium pentoxide powder
Inventor:
Michael Fletcher
Patented Case
View Patent ↗
Granted: Jan 8, 1985
Filed: Jun 28, 1982
Inventor
Michael Fletcher
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.