Granted Patent
Utility
US 6,781,286 · App. 10/285,409
Piezoelectric driving device
Inventors:
Yuko Ogawa, Hirokazu Uchiyama
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Nov 1, 2002
Inventors
Yuko Ogawa
Hirokazu Uchiyama
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.