Granted Patent
Utility
US 5,400,488 · App. 08/156,280
Method of manufacturing a piezoelectric vibrator capable of reliably preventing dielectric breakdown
Inventors:
Tomeji Ohno, Tetsuo Yoshida, Yoshiaki Fuda
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Nov 22, 1993
Inventors
Tomeji Ohno
Tetsuo Yoshida
Yoshiaki Fuda
Assignee (at issue)
TOKIN 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.