Granted Patent
Utility
US 4,668,973 · App. 06/221,367
Semiconductor device passivated with phosphosilicate glass over silicon nitride
Inventors:
Robert H. Dawson, George L. Schnable
Patented Case
View Patent ↗
Granted: May 26, 1987
Filed: Dec 30, 1980
Inventors
Robert H. Dawson
George L. Schnable
Assignee (at issue)
RCA 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.