Granted Patent
Utility
US 4,290,831 · App. 06/141,504
Method of fabricating surface contacts for buried layer into dielectric isolated islands
Inventors:
Kenneth A. Ports, William G. Lucas
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Apr 18, 1980
Inventors
Kenneth A. Ports
William G. Lucas
Assignee (at issue)
HARRIS CORPORATION
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.