Inventor · disambiguated record
Toshiyuki Ajima
Also filed as: AJIMA TOSHIYUKI
47 granted patents·14 pending applications·499 citations·filing 1991–2023
97Inventor score
Files withHITACHI AUTOMOTIVE SYSTEMS LTD22HITACHI ASTEMO LTD17HITACHI LTD13AJIMA TOSHIYUKI2FURUKAWA KIMIHISA1
Top patents by PatentIndex Score
61 records- 0197US7294988B2Synchronous motor drive unit and a driving method thereofHITACHI LTD·Filed 2005·Granted Nov 13, 2007·88 cites·20 claims
- 0297US7161323B2Motor drive apparatus, electric actuator and electric power steering apparatusHITACHI LTD·Filed 2005·Granted Jan 9, 2007·97 cites·11 claims
- 0394US7746023B2Position detecting device and synchronous motor driving device using the sameHITACHI LTD·Filed 2009·Granted Jun 29, 2010·46 cites·14 claims
- 0494US5243732AVacuum cleaner with fuzzy logic controlHITACHI LTD·Filed 1991·Granted Sep 14, 1993·142 cites·16 claims
- 0593US7271557B2AC motor driving apparatus and method of controlling the sameHITACHI LTD·Filed 2006·Granted Sep 18, 2007·33 cites·20 claims
- 0691US12074542B2Motor control device, electromechanical integrated unit, and electric vehicle systemHITACHI ASTEMO LTD·Filed 2020·Granted Aug 27, 2024·2 cites·17 claims
- 0786US10411621B2Drive device for three-phase synchronous motorHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2016·Granted Sep 10, 2019·3 cites·18 claims
- 0883US12074551B2Motor control device, electromechanical unit, electric vehicle system, and motor control methodHITACHI ASTEMO LTD·Filed 2021·Granted Aug 27, 2024·1 cites·13 claims
- 0983US11967915B2Motor control device, motor control method, hybrid system, boost converter system and electric power steering systemHITACHI ASTEMO LTD·Filed 2020·Granted Apr 23, 2024·1 cites·15 claims
- 1079US9531305B2Inverter apparatusHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2014·Granted Dec 27, 2016·4 cites·12 claims
- 1179US9278676B2Brake control deviceNISHINO KIMIO·Filed 2010·Granted Mar 8, 2016·5 cites·4 claims
- 1278US11196377B2Motor drive systemHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2018·Granted Dec 7, 2021·2 cites·9 claims
- 1378US9831814B2Electric motor drive control device, electrically driven power steering device, electrically driven brake device, and electrically driven pump deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted Nov 28, 2017·4 cites·10 claims
- 1476US11356037B2Inverter control device, inverter control method, inverter control programHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2019·Granted Jun 7, 2022·2 cites·5 claims
- 1576US9180852B2Electric boosterHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Granted Nov 10, 2015·4 cites·19 claims
- 1676US8491280B2Oil-flooded screw compressor, motor drive system, and motor control deviceKAMEYA HIROTAKA·Filed 2009·Granted Jul 23, 2013·5 cites·6 claims
- 1774US9819299B2Inverter device and electric vehicleHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2014·Granted Nov 14, 2017·5 cites·6 claims
- 1872US12445074B2Synchronous machine control device, synchronous machine control method, and electric vehicleHITACHI ASTEMO LTD·Filed 2021·Granted Oct 14, 2025·0 cites·14 claims
- 1972US11932224B2Brake control device and brake systemHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2019·Granted Mar 19, 2024·1 cites·7 claims
- 2071US11958459B2Brake systemHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2019·Granted Apr 16, 2024·1 cites·8 claims
- 2171US8882476B2Oil-flooded screw compressor, motor drive system, and motor controlHITACHI IND EQUIPMENT SYS·Filed 2013·Granted Nov 11, 2014·1 cites·6 claims
- 2270US6950276B2Disk drive motor and disk drive storage device incorporating sameHITACHI LTD·Filed 2002·Granted Sep 27, 2005·8 cites·9 claims
- 2368US11558000B2Motor control device and electric vehicle system using the sameHITACHI ASTEMO LTD·Filed 2019·Granted Jan 17, 2023·1 cites·16 claims
- 2467US9143065B2Motor drive deviceAJIMA TOSHIYUKI·Filed 2011·Granted Sep 22, 2015·3 cites·9 claims
- 2565US11967912B2Motor control device and electric brake device including the sameHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2019·Granted Apr 23, 2024·0 cites·12 claims
- 2665US9610972B2Inverter deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted Apr 4, 2017·2 cites·3 claims
- 2765US8833869B2Vehicle brake systemMATSUZAKI NORIKAZU·Filed 2010·Granted Sep 16, 2014·3 cites·6 claims
- 2864US12491774B2Motor control device, electromechanical integrated unit, boost converter system, electric vehicle system, and motor control methodHITACHI ASTEMO LTD·Filed 2021·Granted Dec 9, 2025·0 cites·15 claims
- 2964US12212255B2Electric motor control device, vehicle, and electric motor control methodHITACHI ASTEMO LTD·Filed 2021·Granted Jan 28, 2025·0 cites·13 claims
- 3063US11984821B2Inverter control deviceHITACHI ASTEMO LTD·Filed 2020·Granted May 14, 2024·0 cites·10 claims
- 3162US12395108B2Motor drive device and electric vehicle systemHITACHI ASTEMO LTD·Filed 2021·Granted Aug 19, 2025·0 cites·12 claims
- 3262US6943984B2Magnetic disc apparatus having stator structure with reduced distortionHITACHI LTD·Filed 2002·Granted Sep 13, 2005·4 cites·8 claims
- 3361US7414376B2Motor drive apparatus and method and electrically driven brake apparatusHITACHI LTD·Filed 2007·Granted Aug 19, 2008·4 cites·9 claims
- 3459US5381584AVacuum cleanerHITACHI LTD·Filed 1993·Granted Jan 17, 1995·27 cites·18 claims
- 3558US11611292B2Power conversion deviceHITACHI ASTEMO LTD·Filed 2019·Granted Mar 21, 2023·0 cites·15 claims
- 3656US11451179B2Motor control device and brake control deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2018·Granted Sep 20, 2022·0 cites·15 claims
- 3755US12170497B2Inverter control device and electric vehicle systemHITACHI ASTEMO LTD·Filed 2021·Granted Dec 17, 2024·0 cites·8 claims
- 3855US12149183B2Inverter control device and electric vehicle systemHITACHI ASTEMO LTD·Filed 2020·Granted Nov 19, 2024·0 cites·5 claims
- 3955US11646690B2Motor control device and electric vehicle systemHITACHI ASTEMO LTD·Filed 2019·Granted May 9, 2023·0 cites·18 claims
- 4054US12301071B2Motor control device, mechatronic unit, power generation system, boost converter system, and electric vehicle systemHITACHI LTD·Filed 2021·Granted May 13, 2025·0 cites·15 claims
- 4154US2025211149A1Control device for alternating-current electric motor and electric vehicle equipped with the same, and electric aircraftHITACHI LTD·Filed 2023·Application pending·0 cites
- 4252US2025141381A1Synchronous machine control device, synchronous machine control method, and electric vehicleHITACHI ASTEMO LTD·Filed 2023·Application pending·0 cites
- 4352US2025183827A1Motor control device and electric vehicleHITACHI ASTEMO LTD·Filed 2023·Application pending·0 cites
- 4448US10826410B2Inverter device and electric vehicleHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2018·Granted Nov 3, 2020·0 cites·6 claims
- 4547US11325641B2Control device for electric power steering apparatus and electric power steering apparatusHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2016·Granted May 10, 2022·0 cites·19 claims
- 4646US10873285B2Inverter drive device and electrically driven vehicle system using the sameHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2017·Granted Dec 22, 2020·0 cites·4 claims
- 4746US2025192711A1Inverter Control Device, Electric Power Steering System, and Electric Vehicle SystemHITACHI ASTEMO LTD·Filed 2022·Application pending·0 cites
- 4846US2024356470A1Synchronous-motor control device and electric vehicleHITACHI ASTEMO LTD·Filed 2022·Application pending·0 cites
- 4945US10511249B2Inverter driving device, electric brake apparatus, and electric power steering apparatusHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2016·Granted Dec 17, 2019·0 cites·8 claims
- 5045US2008054839A1Control Apparatus and Electric Brake ApparatusHITACHI LTD·Filed 2007·Application pending·0 cites
Showing the top 50 of 61 patent records by PatentIndex Score.
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