Granted Patent
Utility
US 6,551,889 · App. 09/988,951
Method of producing a SI-GE base heterojunction bipolar device
Inventor:
Stephen Joseph Kovacic
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Feb 1, 2002
Inventor
Stephen Joseph Kovacic
Assignee (at issue)
SiGe Semiconductor, 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.