Inventor · disambiguated record
Kazuo Tahara
Also filed as: MOTEGI SHOJI · TAHARA KAZUO
52 granted patents·5 pending applications·2,004 citations·filing 1977–2008
99Inventor score
Files withHITACHI LTD50HITACHI CAR ENG CO LTD2AGENCY IND SCIENCE TECHN1NIPPON SEIHAKU KABUSHIKI KAISH1
Top patents by PatentIndex Score
57 records- 0196US6191545B1Control apparatus of brushless motor and machine and apparatus using brushless motorHITACHI LTD·Filed 1999·Granted Feb 20, 2001·94 cites·17 claims
- 0296US5239490ADevice for detecting rotation of rotary shaft and rotation controlling apparatus using the sameHITACHI LTD·Filed 1990·Granted Aug 24, 1993·126 cites·18 claims
- 0396US4880474AMethod and apparatus for operating vacuum cleanerHITACHI LTD·Filed 1987·Granted Nov 14, 1989·125 cites·9 claims
- 0494US5243732AVacuum cleaner with fuzzy logic controlHITACHI LTD·Filed 1991·Granted Sep 14, 1993·142 cites·16 claims
- 0593US5481460AController for electric vehicleHITACHI LTD·Filed 1991·Granted Jan 2, 1996·109 cites·15 claims
- 0690US7395888B2Vehicle drive deviceHITACHI LTD·Filed 2005·Granted Jul 8, 2008·26 cites·8 claims
- 0790US6198240B1Motor controllerHITACHI LTD·Filed 1995·Granted Mar 6, 2001·67 cites·15 claims
- 0889US6462430B1Hybrid car and dynamo-electric machineHITACHI LTD·Filed 2000·Granted Oct 8, 2002·67 cites·10 claims
- 0989US5208502ASliding current collector made of ceramicsHITACHI LTD·Filed 1992·Granted May 4, 1993·73 cites·8 claims
- 1088US7279855B2Electric drive device for vehicle and hybrid engine/motor-type four wheel drive deviceHITACHI CAR ENG CO LTD·Filed 2004·Granted Oct 9, 2007·70 cites·32 claims
- 1188US6337548B2Control apparatus of brushless motor and machine and apparatus using brushless motorHITACHI LTD·Filed 2001·Granted Jan 8, 2002·37 cites·14 claims
- 1287US6833646B2Hybrid car and dynamo-electric machineHITACHI LTD·Filed 2004·Granted Dec 21, 2004·36 cites·3 claims
- 1385US6037695AVehicle alternator having improved rotating yokeHITACHI LTD·Filed 1997·Granted Mar 14, 2000·62 cites·6 claims
- 1485US4875539AElectric power steering control systemHITACHI LTD·Filed 1988·Granted Oct 24, 1989·45 cites·20 claims
- 1584US5359278AZero current switching circuit and converting apparatus using the sameHITACHI LTD·Filed 1992·Granted Oct 25, 1994·41 cites·7 claims
- 1683US6479956B1Brushless motor control device and equipment using the control deviceHITACHI LTD·Filed 1999·Granted Nov 12, 2002·50 cites·27 claims
- 1782US7759837B2Rotating electrical machineHITACHI LTD·Filed 2008·Granted Jul 20, 2010·11 cites·16 claims
- 1882US4958406AMethod and apparatus for operating vacuum cleanerHITACHI LTD·Filed 1988·Granted Sep 25, 1990·41 cites·10 claims
- 1981US4865148AVehicle height control apparatus responsive to power steering operationHITACHI LTD·Filed 1988·Granted Sep 12, 1989·45 cites·6 claims
- 2078US5231344AControl apparatus for electric generatorHITACHI LTD·Filed 1992·Granted Jul 27, 1993·75 cites·23 claims
- 2176US6577022B2Hybrid car and dynamo-electric machineHITACHI LTD·Filed 2002·Granted Jun 10, 2003·27 cites·11 claims
- 2276US6541880B2Linear motorHITACHI LTD·Filed 2001·Granted Apr 1, 2003·21 cites·6 claims
- 2375US6653745B1Power source apparatus for a carHITACHI LTD·Filed 2000·Granted Nov 25, 2003·41 cites·6 claims
- 2475US5294872AMethod and apparatus for operating vacuum cleanerHITACHI LTD·Filed 1990·Granted Mar 15, 1994·25 cites·7 claims
- 2574US6603280B2Motor controllerHITACHI LTD·Filed 2001·Granted Aug 5, 2003·29 cites·9 claims
- 2673US6626002B1Controller for PWM/PAM motor, air conditioner, and method of motor controlHITACHI LTD·Filed 1999·Granted Sep 30, 2003·33 cites·7 claims
- 2772US5166585AMotor control apparatus for an electric vacuum cleanerHITACHI LTD·Filed 1991·Granted Nov 24, 1992·28 cites·33 claims
- 2871US7057327B2Vehicular alternatorHITACHI LTD·Filed 2001·Granted Jun 6, 2006·17 cites·9 claims
- 2971US6104118AAlternating current generator for use in vehicleHITACHI LTD·Filed 1999·Granted Aug 15, 2000·35 cites·13 claims
- 3071US4983895AMethod and apparatus for operating vacuum cleanerHITACHI LTD·Filed 1989·Granted Jan 8, 1991·25 cites·2 claims
- 3167US5404717AMethod and system for controlling internal combustion engine with air pumpHITACHI LTD·Filed 1993·Granted Apr 11, 1995·25 cites·37 claims
- 3266US4823037ADC Electric motor having field poles of permanent magnetHITACHI LTD·Filed 1987·Granted Apr 18, 1989·26 cites·7 claims
- 3364US6938713B1Dynamotor of hybrid vehicle, and method of control thereofHITACHI CAR ENG CO LTD·Filed 1999·Granted Sep 6, 2005·47 cites·21 claims
- 3462US5118960AStarter deviceHITACHI LTD·Filed 1991·Granted Jun 2, 1992·24 cites·17 claims
- 3562US4926960AElectric power steering apparatus for vehicleHITACHI LTD·Filed 1988·Granted May 22, 1990·21 cites·4 claims
- 3661US4451752AStator of D.C. rotary machineHITACHI LTD·Filed 1982·Granted May 29, 1984·18 cites·14 claims
- 3759US5381584AVacuum cleanerHITACHI LTD·Filed 1993·Granted Jan 17, 1995·27 cites·18 claims
- 3859US5033565AMotor-driven power steering apparatusHITACHI LTD·Filed 1989·Granted Jul 23, 1991·18 cites·8 claims
- 3958US5015905ADC dynamoelectric machine with interpoles having magnetic flux bypassing membersHITACHI LTD·Filed 1989·Granted May 14, 1991·21 cites·9 claims
- 4057US4250422ACooling means for electrical rotating machineAGENCY IND SCIENCE TECHN·Filed 1977·Granted Feb 10, 1981·15 cites·3 claims
- 4155US6096455APlate-like current collector and method of producing the sameNIPPON SEIHAKU KABUSHIKI KAISH·Filed 1998·Granted Aug 1, 2000·31 cites·4 claims
- 4253US4794291APermanent magnet field DC machineHITACHI LTD·Filed 1987·Granted Dec 27, 1988·16 cites·10 claims
- 4351US5075607AMethod and apparatus for operating vacuum cleanerHITACHI LTD·Filed 1990·Granted Dec 24, 1991·10 cites·8 claims
- 4447US4703210AMiniature electric non-uniform magnetization rotating machineHITACHI LTD·Filed 1986·Granted Oct 27, 1987·13 cites·4 claims
- 4545US4960178AMotor-driven power steering apparatusHITACHI LTD·Filed 1988·Granted Oct 2, 1990·10 cites·4 claims
- 4645US4467234AArmature of rotating machine with means to balance the mutual inductance of adjacent pairs of coilsHITACHI LTD·Filed 1983·Granted Aug 21, 1984·10 cites·11 claims
- 4745US4454460AD.C. Rotary machine with interpole compensationHITACHI LTD·Filed 1983·Granted Jun 12, 1984·10 cites·8 claims
- 4842US5266860ACommutatorHITACHI LTD·Filed 1992·Granted Nov 30, 1993·10 cites·21 claims
- 4941US2006202582A1Synchronous motor and electric driving systemHITACHI LTD·Filed 2006·Application pending·0 cites
- 5040US5155885AVacuum cleaner and method for operating the sameHITACHI LTD·Filed 1989·Granted Oct 20, 1992·12 cites·12 claims
Showing the top 50 of 57 patent records by PatentIndex Score.
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