Inventor
OKEYA MAKOTO
JP21 patents
Patents
21 patentsUS6320822B1Nov 20, 2001
Electronic equipment and control method for electronic equipment
SEIKO EPSON CORP91 citations98
US5545983AAug 13, 1996
Displacement sensor with temperature compensation by combining outputs in a predetermined ratio
SEIKO EPSON CORP60 citations94
US7119475B2Oct 10, 2006
Driving method of piezoelectric actuator, driving apparatus of piezoelectric actuator, electronic watch, electronics, control program of piezoelectric actuator, and storage medium
SEIKO EPSON CORP25 citations92
US7079451B2Jul 18, 2006
Time measurement device and method of controlling the time measurement device
SEIKO EPSON CORP23 citations92
US6693851B1Feb 17, 2004
Electronic device and control method for electronic device
SEIKO EPSON CORP37 citations92
US6424600B1Jul 23, 2002
Portable electronic device and control method for controlling the portable electronic device
SEIKO EPSON CORP47 citations92
US6396772B1May 28, 2002
Electronic apparatus and control method for electronic apparatus
SEIKO EPSON CORP23 citations92
US6262554B1Jul 17, 2001
Electronic device and method of controlling the same
SEIKO EPSON CORP24 citations92
US5581180ADec 3, 1996
Horizontal and vertical displacement detector of wire rope
SEIKO EPSON CORP43 citations88
US6628572B1Sep 30, 2003
Electronic equipment and method of controlling electronic equipment
SEIKO EPSON CORP15 citations84
US6343051B1Jan 29, 2002
Portable electronic device and control method for the portable electronic device
SEIKO EPSON CORP18 citations84
US6462967B1Oct 8, 2002
Power supply device, control method for the power supply device, portable electronic device, timepiece, and control method for the timepiece
SEIKO EPSON CORP13 citations74
US6367967B1Apr 9, 2002
Time-measurement device and method of controlling the same
SEIKO EPSON CORP13 citations74
US6327225B1Dec 4, 2001
Electronic unit, and control method for electronic unit
SEIKO EPSON CORP13 citations74
US6278663B1Aug 21, 2001
Electronic apparatus and control method for electronic apparatus
SEIKO EPSON CORP13 citations74
US9740172B2Aug 22, 2017
Timepiece
SEIKO EPSON CORP2 citations73
US7675218B2Mar 9, 2010
Drive apparatus of piezoelectric actuator, electronic apparatus, drive method of electronic apparatus, drive control program of electronic apparatus, and medium
SEIKO EPSON CORP6 citations63
US7663978B2Feb 16, 2010
Drive control apparatus, electronic apparatus, method of controlling drive of electronic apparatus, drive control program, and recording medium
SEIKO EPSON CORP4 citations63
US7298066B2Nov 20, 2007
Drive apparatus for piezoelectric actuator, drive method for piezoelectric actuator, electronic device, control program for drive apparatus for piezoelectric actuator, and recording medium
SEIKO EPSON CORP5 citations63
US10747248B2Aug 18, 2020
Oscillator
SEIKO EPSON CORP1 citations62
US9354610B2May 31, 2016
Analog electronic timepiece
SEIKO EPSON CORP2 citations61