Granted Patent
Utility
US 6,531,721 · App. 10/034,880
Structure for a heterojunction bipolar transistor
Inventors:
Richard Burton, Apostolos Samelis, Kyushik Hong
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Dec 27, 2001
Inventors
Richard Burton
Apostolos Samelis
Kyushik Hong
Assignee (at issue)
Skyworks Solutions, Inc.
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.