Granted Patent
Utility
US 6,437,421 · App. 09/573,146
Self-aligned dual-base semiconductor process and structure incorporating multiple bipolar device types
Inventors:
Frank L. Thiel, William E. Moore, Philip Shiota
Patented Case
View Patent ↗
Granted: Aug 20, 2002
Filed: May 17, 2000
Inventors
Frank L. Thiel
William E. Moore
Philip Shiota
Assignee (at issue)
Legerity, 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.