Granted Patent
Utility
US 6,806,513 · App. 10/267,342
Heterojunction bipolar transistor having wide bandgap material in collector
Inventors:
Hin Fai Chau, Clarence J. Dunnrowicz, Yan-Hao Chen, Chien-Ping Lee
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Oct 8, 2002
Inventors
Hin Fai Chau
Clarence J. Dunnrowicz
Yan-Hao Chen
Chien-Ping Lee
Assignee (at issue)
EIC 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.