Granted Patent
Utility
US 3,946,793 · App. 05/504,207
Method of forming a high-temperature abrasion-resistant coating on a ferrous metal substrate
Inventors:
Robert H. Kachik, Arthur J. Pignocco
Patented Case
View Patent ↗
Granted: Mar 30, 1976
Filed: Sep 9, 1974
Inventors
Robert H. Kachik
Arthur J. Pignocco
Assignee (at issue)
United States Steel 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.