Granted Patent
Utility
US 5,164,810 · App. 07/703,939
Cubic boron nitride bipolar transistor
Inventors:
Gary L. Doll, Larry E. Henneman, Jr.
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: May 22, 1991
Inventors
Gary L. Doll
Larry E. Henneman, Jr.
Assignee (at issue)
General Motors LLC
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.