Inventor
NAGAHAMA REIKO
JP15 patents
⚠️ This page may combine multiple inventors who share the name “NAGAHAMA REIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
14 patentsUS9575526B2Feb 21, 2017
Electronic device having power generation function, control method of electronic device having power generation function, and portable electronic device having power generation function, and control method of portable electronic device having power generation function
SEIKO EPSON CORP12 citations83
US7514843B2Apr 7, 2009
Piezoelectric actuator and device
SEIKO EPSON CORP18 citations83
US7119476B2Oct 10, 2006
Piezoelectric actuator and device
SEIKO EPSON CORP19 citations82
US11296627B2Apr 5, 2022
Electronic watch and method for controlling electronic watch
SEIKO EPSON CORP0 citations62
US7247970B2Jul 24, 2007
Drive method for piezoelectric actuator, drive apparatus for piezoelectric actuator, electronic device, control program for drive apparatus for piezoelectric actuator, and recording medium
SEIKO EPSON CORP4 citations62
US12510864B2Dec 30, 2025
Regulator, movement, and watch
SEIKO EPSON CORP0 citations61
US8810109B2Aug 19, 2014
Piezoelectric actuator, motor, robot hand, and robot
SEIKO EPSON CORP0 citations52
US7348708B2Mar 25, 2008
Drive method for piezoelectric actuator, drive apparatus for piezoelectric actuator, electronic device, control program for drive apparatus for piezoelectric actuator, and recording medium
SEIKO EPSON CORP0 citations52
US11429067B2Aug 30, 2022
Electronic timepiece, movement, and motor control circuit
SEIKO EPSON CORP0 citations51
US10958199B2Mar 23, 2021
Movement, electronic timepiece, and motor drive control method
SEIKO EPSON CORP0 citations51
US9740171B2Aug 22, 2017
Electronic timepiece
SEIKO EPSON CORP1 citations50
US8934322B2Jan 13, 2015
Electronic timepiece with solar cell
SEIKO EPSON CORP0 citations50
US8787121B2Jul 22, 2014
Electronic timepiece with solar cell
SEIKO EPSON CORP0 citations50
US12158730B2Dec 3, 2024
Movement and electronic watch
SEIKO EPSON CORP0 citations44