Granted Patent
Utility
US 6,593,015 · App. 09/442,599
Tool with a hard coating containing an aluminum-nitrogen compound and a boron-nitrogen compound and method of making the same
Inventor:
Aharon Inspektor
Patented Case
View Patent ↗
Granted: Jul 15, 2003
Filed: Nov 18, 1999
Inventor
Aharon Inspektor
Assignee (at issue)
Kennametal PC 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.