Granted Patent
Utility
US 4,276,688 · App. 06/113,505
Method for forming buried contact complementary MOS devices
Inventor:
Sheng Teng Hsu
Patented Case
View Patent ↗
Granted: Jul 7, 1981
Filed: Jan 21, 1980
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.