Inventor
NAGASAKA EIICHI
JP11 patents
Patents
11 patentsUS5751091AMay 12, 1998
Piezoelectric power generator for a portable power supply unit and portable electronic device equipped with same
SEIKO EPSON CORP103 citations97
US7170826B2Jan 30, 2007
Multifunctional watch
SEIKO EPSON CORP22 citations91
US7031230B1Apr 18, 2006
Starter for electricmagnetic converter, and timepiece
SEIKO EPSON CORP19 citations83
US6603236B2Aug 5, 2003
Electronic timepiece
SEIKO EPSON CORP13 citations82
US6097675AAug 1, 2000
Electronically controlled mechanical timepiece
SEIKO EPSON CORP13 citations73
US11829108B2Nov 28, 2023
Timepiece part and timepiece
SEIKO EPSON CORP0 citations61
US11409244B2Aug 9, 2022
Timepiece part and timepiece
SEIKO EPSON CORP0 citations61
US10747178B2Aug 18, 2020
Mechanical component and timepiece
SEIKO EPSON CORP1 citations61
US12332605B2Jun 17, 2025
Electronically controlled mechanical timepiece
SEIKO EPSON CORP0 citations60
US7536779B2May 26, 2009
Method of manufacturing magnetic head
SEIKO EPSON CORP2 citations55
US7832924B2Nov 16, 2010
Timepiece
SEIKO EPSON CORP0 citations50