Granted Patent
Utility
US 6,168,242 · App. 08/905,883
Zirconium nitride coating having a top layer thereon
Inventor:
Subrata Mokerji
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Aug 1, 1997
Inventor
Subrata Mokerji
Assignee (at issue)
MascoTech, 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.