Granted Patent
Utility
US 4,496,418 · App. 06/393,616
Process for forming an improved silicon-on-sapphire device
Inventor:
William E. Ham
Patented Case
View Patent ↗
Granted: Jan 29, 1985
Filed: Jun 30, 1982
Inventor
William E. Ham
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.