Inventor · disambiguated record
Kazuo Otsuka
Also filed as: OTSUKA KAZUO
66 granted patents·3 pending applications·933 citations·filing 1977–2021
99Inventor score
Top patents by PatentIndex Score
69 records- 0197US10308029B2Liquid holding unit and liquid ejection deviceSEIKO EPSON CORP·Filed 2017·Granted Jun 4, 2019·12 cites·16 claims
- 0292US7101096B2Tray for transferring recording media, and recording apparatusSEIKO EPSON CORP·Filed 2001·Granted Sep 5, 2006·51 cites·45 claims
- 0392US6854843B2Recording apparatusSEIKO EPSON CORP·Filed 2003·Granted Feb 15, 2005·40 cites·13 claims
- 0491US6916132B2Double-sided printing apparatusSEIKO EPSON CORP·Filed 2001·Granted Jul 12, 2005·42 cites·16 claims
- 0588US4790531AIndoor ski slope and apparatus for making snow thereonKAJIMA CORP·Filed 1986·Granted Dec 13, 1988·57 cites·33 claims
- 0686US4399792AAir/fuel ratio control system for internal combustion engines, having engine warming-up detecting meansHONDA MOTOR CO LTD·Filed 1981·Granted Aug 23, 1983·29 cites·4 claims
- 0785US7614739B2Recording apparatus with movable discharge traySEIKO EPSON CORP·Filed 2007·Granted Nov 10, 2009·6 cites·2 claims
- 0885US4507057AControl system for hydraulic pumps of a civil machineKOMATSU MFG CO LTD·Filed 1983·Granted Mar 26, 1985·33 cites·7 claims
- 0985US4377142AAir/fuel ratio control system having an evaporated fuel purging control arrangementHONDA MOTOR CO LTD·Filed 1981·Granted Mar 22, 1983·29 cites·2 claims
- 1085US4216572AReplaceable gang head machine toolHONDA MOTOR CO LTD·Filed 1978·Granted Aug 12, 1980·37 cites·9 claims
- 1184US7111934B2Recording medium feeding apparatus, recording apparatus, liquid ejecting apparatusSEIKO EPSON CORP·Filed 2004·Granted Sep 26, 2006·24 cites·19 claims
- 1282US4450812AElectric control system for internal combustion engines, having fail safe function for engine condition detecting sensorsHONDA MOTOR CO LTD·Filed 1981·Granted May 29, 1984·24 cites·12 claims
- 1382US4375800AControl system for internal combustion engines, provided with an exhaust gas recirculation control having a fail safe functionHONDA MOTOR CO LTD·Filed 1981·Granted Mar 8, 1983·23 cites·7 claims
- 1481US7281791B2Recording apparatusSEIKO EPSON CORP·Filed 2004·Granted Oct 16, 2007·17 cites·24 claims
- 1580US9624053B2Recording apparatus with a medium restricting portionSEIKO EPSON CORP·Filed 2016·Granted Apr 18, 2017·2 cites·8 claims
- 1679US10500874B2Recording apparatusSEIKO EPSON CORP·Filed 2018·Granted Dec 10, 2019·1 cites·7 claims
- 1779US5714719AWorkload detecting system for excavating and loading apparatusKOMATSU MFG CO LTD·Filed 1993·Granted Feb 3, 1998·45 cites·42 claims
- 1879US4380985AFlow rate control system for fluid being supplied to an internal combustion engine, having initial position setting function for flow rate control valve actuatorHONDA MOTOR CO LTD·Filed 1981·Granted Apr 26, 1983·22 cites·12 claims
- 1978US4718396AMulticylinder internal combustion engine with rotation sensorHONDA MOTOR CO LTD·Filed 1986·Granted Jan 12, 1988·29 cites·18 claims
- 2077US10412238B2Recording apparatusSEIKO EPSON CORP·Filed 2017·Granted Sep 10, 2019·1 cites·10 claims
- 2175US4333049AInrush current measuring apparatus with instantaneous power interruption deviceTAKAMISAWA CYBERNETICS·Filed 1980·Granted Jun 1, 1982·35 cites·12 claims
- 2274US10703116B2Recording apparatusSEIKO EPSON CORP·Filed 2018·Granted Jul 7, 2020·1 cites·5 claims
- 2373US6814436B2Recording apparatusSEIKO EPSON CORP·Filed 2003·Granted Nov 9, 2004·13 cites·13 claims
- 2473US6081052ARotor for rotating machine, process for producing the same, and magnet unitHONDA MOTOR CO LTD·Filed 1997·Granted Jun 27, 2000·41 cites·26 claims
- 2572US11123998B2Medium transport device and recording apparatusSEIKO EPSON CORP·Filed 2018·Granted Sep 21, 2021·1 cites·16 claims
- 2672US4254068AMethod and apparatus for regenerating foamed plasticsOTSUKA SANGYO KABUSHIKI KAISHA·Filed 1978·Granted Mar 3, 1981·23 cites·14 claims
- 2771US11433691B2Recording apparatusSEIKO EPSON CORP·Filed 2021·Granted Sep 6, 2022·0 cites·20 claims
- 2871US4380988AAir/fuel ratio control system for internal combustion engines, having exhaust gas recirculation control functionHONDA MOTOR CO LTD·Filed 1981·Granted Apr 26, 1983·17 cites·2 claims
- 2969US10913292B2Recording apparatusSEIKO EPSON CORP·Filed 2019·Granted Feb 9, 2021·0 cites·16 claims
- 3069US10752027B2Medium transporting device and recording apparatusSEIKO EPSON CORP·Filed 2020·Granted Aug 25, 2020·0 cites·18 claims
- 3168US4393842AAir/fuel ratio control system for internal combustion engines, having atmospheric pressure compensating functionHONDA MOTOR CO LTD·Filed 1981·Granted Jul 19, 1983·15 cites·6 claims
- 3267US4375797AAir/fuel ratio feedback control system for internal combustion enginesHONDA MOTOR CO LTD·Filed 1981·Granted Mar 8, 1983·15 cites·1 claims
- 3366US4401080AAir/fuel ratio control system for internal combustion engines, having air/fuel ratio control function at engine accelerationHONDA MOTOR CO LTD·Filed 1981·Granted Aug 30, 1983·13 cites·3 claims
- 3465US4414950AFail safe device for air/fuel ratio feedback control systemHONDA MOTOR CO LTD·Filed 1981·Granted Nov 15, 1983·14 cites·3 claims
- 3565US4383409AAir/fuel ratio control system for internal combustion engines, having function of detecting air/fuel ratio control initiating timingHONDA MOTOR CO LTD·Filed 1981·Granted May 17, 1983·19 cites·3 claims
- 3664US6491295B2Paper feederSEIKO EPSON CORP·Filed 2001·Granted Dec 10, 2002·8 cites·14 claims
- 3764US5880574AControl system for electric vehicleHONDA MOTOR CO LTD·Filed 1996·Granted Mar 9, 1999·49 cites·4 claims
- 3862US11766884B2Frame coupling structure and recording deviceSEIKO EPSON CORP·Filed 2021·Granted Sep 26, 2023·0 cites·9 claims
- 3962US10647133B2Medium transporting device and recording apparatusSEIKO EPSON CORP·Filed 2018·Granted May 12, 2020·0 cites·20 claims
- 4062US7481426B2Medium feeder and liquid ejecting apparatus or recording apparatus incorporating the sameSEIKO EPSON CORP·Filed 2006·Granted Jan 27, 2009·2 cites·15 claims
- 4159US7309123B2Recording apparatusSEIKO EPSON CORP·Filed 2004·Granted Dec 18, 2007·6 cites·19 claims
- 4259US4450680AAir/fuel ratio control system for internal combustion engines, having secondary air supply controlHONDA MOTOR CO LTD·Filed 1981·Granted May 29, 1984·18 cites·8 claims
- 4358US4503479AElectronic circuit for vehicles, having a fail safe function for abnormality in supply voltageHONDA MOTOR CO LTD·Filed 1983·Granted Mar 5, 1985·17 cites·5 claims
- 4457US7114716B2Paper feederSEIKO EPSON CORP·Filed 2003·Granted Oct 3, 2006·4 cites·7 claims
- 4556US10759203B2Recording apparatusSEIKO EPSON CORP·Filed 2019·Granted Sep 1, 2020·0 cites·9 claims
- 4654US4434764AAir/fuel ratio feedback control system for internal combustion engines, having atmospheric pressure-dependent fail safe function for O2 sensorHONDA MOTOR CO LTD·Filed 1982·Granted Mar 6, 1984·10 cites·5 claims
- 4753US4371822AControl device for pulse motors, having a fail safe functionHONDA MOTOR CO LTD·Filed 1981·Granted Feb 1, 1983·12 cites·8 claims
- 4853US4354470AFuel supply apparatus in internal combustion engineHONDA MOTOR CO LTD·Filed 1980·Granted Oct 19, 1982·8 cites·4 claims
- 4952US11196883B2Printer with cover to protect connection of external cablesSEIKO EPSON CORP·Filed 2020·Granted Dec 7, 2021·0 cites·7 claims
- 5052US5696331AApparatus for detecting metal powder amount in hydraulic circuitKOMATSU MFG CO LTD·Filed 1996·Granted Dec 9, 1997·18 cites·8 claims
Showing the top 50 of 69 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Kazuo Otsuka files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →