Granted Patent
Utility
US 4,884,788 · App. 07/180,578
Boron nitride containing vessel having a surface coating of titanium iron-silicon thereon
Inventor:
Gregory W. Shaffer
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Apr 12, 1988
Inventor
Gregory W. Shaffer
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.