Granted Patent
Utility
US 4,462,846 · App. 06/229,542
Semiconductor structure for recessed isolation oxide
Inventor:
Ramesh C. Varshney
Patented Case
View Patent ↗
Granted: Jul 31, 1984
Filed: Jan 29, 1981
Inventor
Ramesh C. Varshney
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.