Inventor
KITAHARA JOJI
JP24 patents
⚠️ This page may combine multiple inventors who share the name “KITAHARA JOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
23 patentsUS7027360B2Apr 11, 2006
Electronic timepiece with a date display function
SEIKO EPSON CORP74 citations98
US6320822B1Nov 20, 2001
Electronic equipment and control method for electronic equipment
SEIKO EPSON CORP91 citations98
US7583564B2Sep 1, 2009
Piezoelectric actuator and electronic equipment with piezoelectric actuator
SEIKO EPSON CORP46 citations92
US7109638B2Sep 19, 2006
Piezoelectric actuator, timepiece, and electronic device
SEIKO EPSON CORP32 citations92
US6424600B1Jul 23, 2002
Portable electronic device and control method for controlling the portable electronic device
SEIKO EPSON CORP47 citations92
US6262554B1Jul 17, 2001
Electronic device and method of controlling the same
SEIKO EPSON CORP24 citations92
US6163126ADec 19, 2000
Electronic device
SEIKO EPSON CORP29 citations92
US5581519ADec 3, 1996
Analog indicator type electronic timepiece and charging method thereof
SEIKO EPSON CORP24 citations92
US7158449B2Jan 2, 2007
Electronic timepiece and electronic apparatus
SEIKO EPSON CORP19 citations91
US5237237AAug 17, 1993
Ultrasonic motor and drive method
SEIKO EPSON CORP26 citations89
US7876070B2Jan 25, 2011
Electronic timepiece with generator function
SEIKO EPSON CORP8 citations84
US5740132AApr 14, 1998
Electronic timepiece and method of charging the same
SEIKO EPSON CORP19 citations82
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
US5479380ADec 26, 1995
Ultrasonic motor for driving an analog electronic watch
SEIKO EPSON CORP7 citations74
US6183125B1Feb 6, 2001
Electronic watch
SEIKO EPSON CORP9 citations73
US6120177ASep 19, 2000
Electronic watch
SEIKO EPSON CORP10 citations73
US6097672AAug 1, 2000
Display device and watch with same
SEIKO EPSON CORP11 citations73
US6012838AJan 11, 2000
Electronic watch
SEIKO EPSON CORP9 citations73
US5822278AOct 13, 1998
Electronic timepiece and method of charging the same
SEIKO EPSON CORP9 citations72
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
US7616527B2Nov 10, 2009
Electronic timepiece with calendar function and control method for same
SEIKO EPSON CORP3 citations63
US7859949B2Dec 28, 2010
Timepiece
SEIKO EPSON CORP3 citations62