Granted Patent
Utility
US 5,349,201 · App. 07/889,864
NPN heterojunction bipolar transistor including antimonide base formed on semi-insulating indium phosphide substrate
Inventors:
William E. Stanchina, Thomas Charles Hasenberg
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: May 28, 1992
Inventors
William E. Stanchina
Thomas Charles Hasenberg
Assignee (at issue)
Hughes Aircraft Company
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.