Inventor
Kazumi Sakumoto
Inventor
Chiba, JP
Overview
Patents· 51 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G04Cprimary
G04CElectromechanical clocks or watches24%
G01SRadio direction-finding11%
G04GElectronic time-pieces11%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters11%
G04FTime-interval measuring7%
A61BDiagnosis5%
G09GArrangements or circuits for control of indicating devices using static means to present variable information5%
G01CMeasuring distances, levels or bearings4%
A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing2%
G01PMeasuring linear or angular speed, acceleration, deceleration, or shock2%
PatentTitleYear
10,831,158Timepiece, motor control device, control method of timepiece, and motor control method202010,228,660Electronic apparatus and control method201910,203,664Electronic timepiece201910,180,661Frequency division circuit, method of controlling frequency division circuit, and analog electronic timepiece201910,067,480Time correction system, electronic device, timepiece, and program20189,800,333'Electronic device, communication method and recording medium'20179,442,465'Electronic timepiece and control method of electronic timepiece'20169,190,941'Stepping motor control circuit, movement, and analog electronic timepiece'20159,182,746'Stepping motor control circuit, movement and analog electronic timepiece'20159,086,685'Stepping motor control circuit, movement, and analogue electronic timepiece'20158,873,344'Power consumption control device, timepiece device, electronic device, power consumption control method, power consumption control program'20148,810,186'Motor drive device, timepiece device, and electronic device'20148,721,170'Stepping motor control circuit, movement, and analogue electronic timepiece'20148,699,304'Electronic device, electronic device control method, and electronic device control program'20148,569,991'Stepping motor control circuit and analogue electronic watch'20138,406,086'Electronic timepiece'20138,351,303'Stepping motor controller and analog electronic timepiece'20138,335,135'Stepping motor control circuit and analogue electronic timepiece'20128,319,468'Stepping motor control circuit and analogue electronic timepiece'20128,295,131'Chronograph timepiece'20128,289,816'Chronograph timepiece'20128,274,863'Chronograph timepiece'20128,223,594'Chronograph timepiece'20128,215,827'Chronograph timepiece'20128,213,268'Chronograph timepiece'20128,139,445'Stepping motor control circuit and analog electronic watch'20128,111,033'Stepping motor control circuit and analog electronic timepiece'20126,930,659'Light emitting indicator drive circuit'20056,897,837'Self-luminous display element driving device'20056,758,816'Pulse wave detector'20046,532,432'Portable GPS velosity/distance meter'20036,449,583'Portable measurement apparatus'20026,429,600'Light emitting display device having luminance compensating circuitry'20026,404,139'Circuit for driving a light emitting elements display device'20026,388,613'Portable GPS type distance/speed meter capable of selectively using doppler speed measuring method'20026,371,920'Pulse wave detecting device'20026,291,942'Self-luminous display element driving device'20016,285,314'Portable GPS type distance/speed meter capable of changing sampling period of GPS signal in response to arm swinging period'20016,246,362'Portable GPS signal receiving apparatus'20016,240,366'GPS reception ratio detecting apparatus and portable type distance/speed meter capable of indicating GPS signal receiving condition'20016,204,807'Portable GPS positioning apparatus'20016,129,676'Movement rate monitor'20006,009,375'Portable GPS receiver'19995,926,131'GPS receiving apparatus'19995,905,460'Wrist watch type GPS receiver'19995,781,511'Wrist-worn portable electronic device'19985,697,374'Pulse rate monitor'19975,572,196'Electronic analog watch with pager'19965,490,816'Pace generating device'19965,297,120'Radio wave-standardized electronic timepiece'19945,297,118'Electronic watch with pager'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2020Patents assigned to SEIKO INSTR INC (50)· patent assignee history
1994–1996Based in Tokyo, JP· patent location history
1996–2020Based in Chiba, JP· patent location history
2012–2014Patents assigned to HONMURA KEISHI (16)· patent assignee history
2012–2014Patents assigned to MANAKA SABURO (16)· patent assignee history
2012–2014Patents assigned to OGASAWARA KENJI (16)· patent assignee history
2012–2014Patents assigned to SAKUMOTO KAZUMI (16)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEIKO INSTR INC | 50 | 1994–2020 |
| HONMURA KEISHI | 16 | 2012–2014 |
| MANAKA SABURO | 16 | 2012–2014 |
| OGASAWARA KENJI | 16 | 2012–2014 |
| SAKUMOTO KAZUMIself | 16 | 2012–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Chiba, JP | 48 | 1996–2020 |
| Tokyo, JP | 3 | 1994–1996 |