Granted Patent
Utility
US 6,646,918 · App. 10/054,085
Semiconductor level shifter circuit
Inventors:
Takayuki Kurokawa, Hiroshi Sugawara
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Jan 22, 2002
Inventors
Takayuki Kurokawa
Hiroshi Sugawara
Assignee (at issue)
NEC Electronics 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.