Granted Patent
Utility
US 4,816,882 · App. 07/138,989
Power MOS transistor with equipotential ring
Inventors:
Richard A. Blanchard, Adrian I. Cogan
Patented Case
View Patent ↗
Granted: Mar 28, 1989
Filed: Dec 29, 1987
Inventors
Richard A. Blanchard
Adrian I. Cogan
Assignee (at issue)
SILICONIX INCORPORATED
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.