Granted Patent
Utility
US 4,692,992 · App. 06/878,259
Method of forming isolation regions in a semiconductor device
Inventor:
Sheng Teng Hsu
Patented Case
View Patent ↗
Granted: Sep 15, 1987
Filed: Jun 25, 1986
Inventor
Sheng Teng Hsu
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.