Inventor · disambiguated record
Yuhachi Takakura
Also filed as: TAKAKURA YUHACHI
12 granted patents·482 citations·filing 1993–2002
94Inventor score
Files withHITACHI LTD12
Top patents by PatentIndex Score
12 records- 0195US6690137B2Sensorless control system for synchronous motorHITACHI LTD·Filed 2002·Granted Feb 10, 2004·74 cites·23 claims
- 0293US6628099B2Synchronous motor driving system and sensorless control method for a synchronous motorHITACHI LTD·Filed 2002·Granted Sep 30, 2003·45 cites·7 claims
- 0391US6642681B2Starting control method of and control apparatus for synchronous motor, and air conditioner, refrigerator, washing machine and vacuum cleaner each provided with the control apparatusHITACHI LTD·Filed 2002·Granted Nov 4, 2003·51 cites·12 claims
- 0490US6198240B1Motor controllerHITACHI LTD·Filed 1995·Granted Mar 6, 2001·67 cites·15 claims
- 0583US6479956B1Brushless motor control device and equipment using the control deviceHITACHI LTD·Filed 1999·Granted Nov 12, 2002·50 cites·27 claims
- 0677US6650081B2Synchronous motor driving systemHITACHI LTD·Filed 2002·Granted Nov 18, 2003·20 cites·26 claims
- 0775US6075328APWM/PAM control mode switching type motor control apparatus, and motor drive and air-conditioner using the sameHITACHI LTD·Filed 1997·Granted Jun 13, 2000·50 cites·32 claims
- 0874US6603280B2Motor controllerHITACHI LTD·Filed 2001·Granted Aug 5, 2003·29 cites·9 claims
- 0973US6626002B1Controller for PWM/PAM motor, air conditioner, and method of motor controlHITACHI LTD·Filed 1999·Granted Sep 30, 2003·33 cites·7 claims
- 1073US5351182ALevel shift circuit and inverter apparatus using the sameHITACHI LTD·Filed 1993·Granted Sep 27, 1994·26 cites·7 claims
- 1165US6657412B2Pulse width modulation method, pulse width modulator and power converterHITACHI LTD·Filed 2001·Granted Dec 2, 2003·11 cites·18 claims
- 1255US5929591AAir conditionerHITACHI LTD·Filed 1997·Granted Jul 27, 1999·26 cites·25 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →