Granted Patent
Utility
US 6,617,686 · App. 10/072,775
Semiconductor device and method of isolating circuit regions
Inventor:
Robert B. Davies
Patented Case
View Patent ↗
Granted: Sep 9, 2003
Filed: Feb 8, 2002
Inventor
Robert B. Davies
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.