Granted Patent
Utility
US 4,514,355 · App. 06/452,183
Process for improving the high temperature flexural strength of titanium diboride-boron nitride
Inventor:
Lionel C. Montgomery
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Dec 22, 1982
Inventor
Lionel C. Montgomery
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.