Granted Patent
Utility
US 4,751,201 · App. 07/021,668
Passivation of gallium arsenide devices with sodium sulfide
Inventors:
Richard N. Nottenburg, Claude J. Sandroff
Patented Case
View Patent ↗
Granted: Jun 14, 1988
Filed: Mar 4, 1987
Inventors
Richard N. Nottenburg
Claude J. Sandroff
Assignee (at issue)
Bell Communications Research, 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.