Granted Patent
Utility
US 5,289,029 · App. 07/875,830
Semiconductor integrated circuit device having wells biased with different voltage levels
Inventor:
Yasutaka Nakashiba
Patented Case
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Granted: Feb 22, 1994
Filed: Apr 30, 1992
Inventor
Yasutaka Nakashiba
Assignee (at issue)
NEC 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.