Granted Patent
Utility
US 5,631,495 · App. 08/346,122
High performance bipolar devices with plurality of base contact regions formed around the emitter layer
Inventors:
James S. Dunn, Michael D. Hulvey, Eric Johnson, Robert A. Kertis, Kenneth Knetch Kieft, III, Albert Edson Lanpher, Nicholas Theodore Schmidt
Patented Case
View Patent ↗
Granted: May 20, 1997
Filed: Nov 29, 1994
Inventors
James S. Dunn
Michael D. Hulvey
Eric Johnson
Robert A. Kertis
Kenneth Knetch Kieft, III
Albert Edson Lanpher
Nicholas Theodore Schmidt
Assignee (at issue)
International Business Machines 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.