Granted Patent
Utility
US 5,100,845 · App. 07/669,009
Process for producing titanium diboride and boron nitride powders
Inventor:
Lionel C. Montgomery
Patented Case
View Patent ↗
Granted: Mar 31, 1992
Filed: Mar 31, 1991
Inventor
Lionel C. Montgomery
Assignee (at issue)
Union Carbide Coatings Service Technology 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.