Granted Patent
Utility
US 4,767,432 · App. 06/827,135
Corrosion resistant cobalt-base alloy containing hafnium and a high proportion of chromium
Inventor:
David J. Gaul
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Feb 7, 1986
Inventor
David J. Gaul
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.