Granted Patent
Utility
US 5,601,933 · App. 08/504,638
Low friction cobalt based coatings for titanium alloys
Inventors:
Karel Hajmrle, Anthony Peter Chilkowich
Patented Case
View Patent ↗
Granted: Feb 11, 1997
Filed: Jul 20, 1995
Inventors
Karel Hajmrle
Anthony Peter Chilkowich
Assignee (at issue)
Sherritt Inc.
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.