Granted Patent
Utility
US 4,839,245 · App. 07/159,545
Zirconium nitride coated article and method for making same
Inventors:
Jiinjen Albert Sue, Harden H. Troue
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Feb 22, 1988
Inventors
Jiinjen Albert Sue
Harden H. Troue
Assignee (at issue)
Union Carbide 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.