Granted Patent
Utility
US 6,445,622 · App. 09/876,158
Voltage level shifter circuit and nonvolatile semiconductor storage device using the circuit
Inventor:
Yasuaki Hirano
Patented Case
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Granted: Sep 3, 2002
Filed: Jun 8, 2001
Inventor
Yasuaki Hirano
Assignee (at issue)
SHARP KABUSHIKI KAISHA
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.