Granted Patent
Utility
US 6,801,033 · App. 10/401,360
Voltage converter having switching element with variable substrate potential
Inventors:
Minoru Sudo, Jun Osanai
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Mar 28, 2003
Inventors
Minoru Sudo
Jun Osanai
Assignee (at issue)
SEIKO INSTRUMENTS INC.
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.