Inventor
TAKAKURA AKIRA
JP40 patents
⚠️ This page may combine multiple inventors who share the name “TAKAKURA AKIRA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO INSTR INC
21 patentsUS5949215ASep 7, 1999
Small-sized battery charger
SEIKO INSTR INC55 citations96
US5889735AMar 30, 1999
Thermoelectrically powered wrist watch
SEIKO INSTR INC54 citations92
US5550795AAug 27, 1996
Electronic timepiece and a method of driving a stepping motor of electronic timepiece
SEIKO INSTR INC24 citations91
US7274337B2Sep 25, 2007
Antenna structure and wave clock having the antenna structure, and method for manufacturing the antenna structure
SEIKO INSTR INC10 citations84
US5615178AMar 25, 1997
Electronic control timepiece
SEIKO INSTR INC16 citations74
US9036455B2May 19, 2015
Electronic timepiece
SEIKO INSTR INC5 citations73
US8351303B2Jan 8, 2013
Stepping motor controller and analog electronic timepiece
SEIKO INSTR INC4 citations63
US7262742B2Aug 28, 2007
Antenna frame, antenna structure, and watch type wave clock having the antenna structure
SEIKO INSTR INC2 citations63
US9442465B2Sep 13, 2016
Electronic timepiece and control method of electronic timepiece
SEIKO INSTR INC2 citations61
US9092015B2Jul 28, 2015
Electronic timepiece
SEIKO INSTR INC1 citations52
US10132627B2Nov 20, 2018
Electronic device, measurement data processing method, and measurement data processing program
SEIKO INSTR INC0 citations51
US9941733B2Apr 10, 2018
Electronic device, communication system, and method of controlling electronic device
SEIKO INSTR INC1 citations51
US9546882B2Jan 17, 2017
Electronic apparatus and program
SEIKO INSTR INC1 citations48
US9192843B2Nov 24, 2015
Analysis system, analysis apparatus, electronic device, analysis method, and program
SEIKO INSTR INC1 citations46
US9086685B2Jul 21, 2015
Stepping motor control circuit, movement, and analogue electronic timepiece
SEIKO INSTR INC0 citations42
US9763627B2Sep 19, 2017
Electronic device, display control method and program
SEIKO INSTR INC0 citations41
US8682420B2Mar 25, 2014
Heartbeat measuring device and heartbeat measuring method
SEIKO INSTR INC0 citations41
US10422809B2Sep 24, 2019
Electronic apparatus and program
SEIKO INSTR INC0 citations40
US10067480B2Sep 4, 2018
Time correction system, electronic device, timepiece, and program
SEIKO INSTR INC0 citations40
US9800333B2Oct 24, 2017
Electronic device, communication method and recording medium
SEIKO INSTR INC0 citations40
US9709962B2Jul 18, 2017
Time correction system, electronic device, timepiece, and program
SEIKO INSTR INC0 citations40
KATO KAZUO
6 patentsUS8289816B2Oct 16, 2012
Chronograph timepiece
KATO KAZUO3 citations61
US8213268B2Jul 3, 2012
Chronograph timepiece
KATO KAZUO4 citations61
US8982675B2Mar 17, 2015
Power supply unit and electronic timepiece
KATO KAZUO0 citations40
US8295131B2Oct 23, 2012
Chronograph timepiece
KATO KAZUO0 citations40
US8215827B2Jul 10, 2012
Chronograph timepiece
KATO KAZUO0 citations40
US9076371B2Jul 7, 2015
Display device and electronic apparatus using display device
KATO KAZUO0 citations39
MANAKA SABURO
3 patentsUS8319468B2Nov 27, 2012
Stepping motor control circuit and analogue electronic timepiece
MANAKA SABURO12 citations81
US8335135B2Dec 18, 2012
Stepping motor control circuit and analogue electronic timepiece
MANAKA SABURO3 citations62
US8569991B2Oct 29, 2013
Stepping motor control circuit and analogue electronic watch
MANAKA SABURO3 citations60