Inventor · disambiguated record
Takeshi Obata
Also filed as: OBATA TAKESHI
24 granted patents·15 pending applications·278 citations·filing 1988–2014
95Inventor score
Top patents by PatentIndex Score
39 records- 0191US5196769AMotor control deviceCHIBA HIROSHI·Filed 1991·Granted Mar 23, 1993·25 cites·9 claims
- 0287US7112940B2Frequency converter, motor, motor drive system and maintenance method for motor drive systemHITACHI IND EQUIPMENT SYS·Filed 2005·Granted Sep 26, 2006·14 cites·13 claims
- 0384US5396757ADirectly motor-driven spindle assemblyHITACHI LTD·Filed 1992·Granted Mar 14, 1995·13 cites·6 claims
- 0478US5787460ADisk array apparatus that only calculates new parity after a predetermined number of write requestsFUJITSU LTD·Filed 1996·Granted Jul 28, 1998·86 cites·19 claims
- 0575US5930077AMagnetic head for recording and reproducing a signal and comprising a slider provided with a protective film including an intermediate layer and an amorphous hard carbon layerNEC CORP·Filed 1996·Granted Jul 27, 1999·28 cites·13 claims
- 0672US8816694B2Apparatus and method for detecting partial discharge at turn-to-turn insulation in motorOBATA KOUJI·Filed 2005·Granted Aug 26, 2014·8 cites·12 claims
- 0770US4833873ASpindle apparatus directly driven by electric motorHITACHI LTD·Filed 1988·Granted May 30, 1989·8 cites·7 claims
- 0869US7659651B2Rotating electric machine, winding machine, and rotating electric machine systemHITACHI LTD·Filed 2007·Granted Feb 9, 2010·11 cites·20 claims
- 0968US5099640AApparatus and method for control of a spinning machineHITACHI LTD·Filed 1990·Granted Mar 31, 1992·7 cites·15 claims
- 1065US5954822ADisk array apparatus that only calculates new parity after a predetermined number of write requestsFUJITSU LTD·Filed 1998·Granted Sep 21, 1999·45 cites·17 claims
- 1164US7898138B2Rotary electric machineHITACHI IND EQUIPMENT SYS·Filed 2007·Granted Mar 1, 2011·4 cites·9 claims
- 1262US7426658B2Data storage system and log data equalization control method for storage control apparatusFUJITSU LTD·Filed 2005·Granted Sep 16, 2008·3 cites·16 claims
- 1361US7700211B2Fuel cell, fuel cell electrode and method for fabricating the sameNEC CORP·Filed 2004·Granted Apr 20, 2010·4 cites·18 claims
- 1460US9810588B2Optical fiber temperature sensorHASHIMOTO EIJI·Filed 2012·Granted Nov 7, 2017·2 cites·3 claims
- 1560US7752496B2Method, apparatus, and computer product for managing log dataFUJITSU LTD·Filed 2005·Granted Jul 6, 2010·2 cites·5 claims
- 1655US2009035640A1Catalyst-loaded support used for forming electrode for fuel cell, and method of producing the sameTOYOTA MOTOR CO LTD·Filed 2008·Application pending·0 cites
- 1753US2014354298A1Apparatus and method for detecting partial discharge at turn-to-turn insulation in motorHITACHI IND EQUIPMENT SYS·Filed 2014·Application pending·0 cites
- 1850US2009023032A1Electrode for fuel cell, electrolyte-dispersed solution for forming electrode, method of producing the solution, and polymer electrolyte fuel cellOBATA TAKESHI·Filed 2008·Application pending·0 cites
- 1950US2009061271A1Fuel cell and a fuel cell systemNEC CORP·Filed 2006·Application pending·0 cites
- 2050US2009117418A1Fuel cell and driving method for fuel cellOBATA TAKESHI·Filed 2006·Application pending·0 cites
- 2149US2009136802A1Solid polymer fuel cellNEC CORP·Filed 2007·Application pending·0 cites
- 2248US7202628B2Frequency converter, motor, motor drive system and maintenance method for motor drive systemHITACHI IND EQUIPMENT SYS·Filed 2006·Granted Apr 10, 2007·0 cites·3 claims
- 2347US2007092770A1Method of measuring alcohol concentration, alcohol concentration measurement apparatus, and fuel cell system including the apparatusOBATA TAKESHI·Filed 2004·Application pending·0 cites
- 2447US2009239114A1Polymer electrolyte fuel cellNEC CORP·Filed 2005·Application pending·0 cites
- 2546US7655343B2Liquid fuel supply type fuel cellNEC CORP·Filed 2003·Granted Feb 2, 2010·0 cites·13 claims
- 2646US2005142406A1Fuel cell system and method of operating the sameNEC CORP·Filed 2004·Application pending·0 cites
- 2745US4876847ARing Spinning machineHITACHI LTD·Filed 1988·Granted Oct 31, 1989·3 cites·14 claims
- 2844US6387549B1Magnetic sensorNEC CORP·Filed 1999·Granted May 14, 2002·13 cites·20 claims
- 2944US2009117419A1Dry-state detecting method and electronic device system for fuel cell, and power control method thereforNEC CORP·Filed 2006·Application pending·0 cites
- 3044US2006251951A1Fuel cell and method for producing sameOBATA TAKESHI·Filed 2004·Application pending·0 cites
- 3142US7663337B2Frequency converter, motor, motor drive system and maintenance method for motor drive systemHITACHI IND EQUIPMENT SYS·Filed 2009·Granted Feb 16, 2010·0 cites·6 claims
- 3242US2007202382A1Solid Electrolyte Fuel CellNAKAMURA SHIN·Filed 2005·Application pending·0 cites
- 3341US7487293B2Data storage system and log data output method upon abnormality of storage control apparatusFUJITSU LTD·Filed 2005·Granted Feb 3, 2009·0 cites·14 claims
- 3441US2006200634A1Data storage system and data storage control apparatusFUJITSU LTD·Filed 2005·Application pending·0 cites
- 3540US7511450B2Frequency converter, motor, motor drive system and maintenance method for motor drive systemHITACHI IND EQUIPMENT SYS·Filed 2007·Granted Mar 31, 2009·0 cites·1 claims
- 3640US7408323B2Frequency converter, motor, motor drive system and maintenance method for motor drive systemHITACHI IND EQUIPMENT SYS·Filed 2007·Granted Aug 5, 2008·0 cites·3 claims
- 3737US2006204814A1Fuel supply unit for fuel cell and fuel cell using sameSEKINO SHOJI·Filed 2004·Application pending·0 cites
- 3835US2009078528A1Drum rotating apparatus for use on construction machinesUZAWA NOBUO·Filed 2006·Application pending·0 cites
- 3930US5681500AMagnetic oxide having a large magnetoresistance effect at room temperatureNEC CORP·Filed 1996·Granted Oct 28, 1997·2 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Takeshi Obata 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 →