Granted Patent
Utility
US 6,429,502 · App. 09/643,575
Multi-chambered trench isolated guard ring region for providing RF isolation
Inventors:
Michael Librizzi, Christopher Hull
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Aug 22, 2000
Inventors
Michael Librizzi
Christopher Hull
Assignee (at issue)
Silicon Wave, 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.