Granted Patent
Utility
US 4,346,014 · App. 06/255,605
Rolling oil compositions and method of inhibiting carbon smut on batch annealed steel
Inventors:
Joseph A. Piucci, Kurt Goltz
Patented Case
View Patent ↗
Granted: Aug 24, 1982
Filed: Apr 20, 1981
Inventors
Joseph A. Piucci
Kurt Goltz
Assignee (at issue)
Pennwalt 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.