Inventor · disambiguated record
Shigeta Ueda
Also filed as: UEDA SHIGETA
23 granted patents·4 pending applications·523 citations·filing 1983–2005
96Inventor score
Files withHITACHI LTD24
Top patents by PatentIndex Score
27 records- 0193US6541877B2Wind power generation systemHITACHI LTD·Filed 2001·Granted Apr 1, 2003·63 cites·14 claims
- 0291US5298848ALarge capacity variable speed PWM spatial vector type sub-harmonic system for driving AC electric motorHITACHI LTD·Filed 1991·Granted Mar 29, 1994·79 cites·13 claims
- 0388US6975055B2Dynamo-electric machine having a rotor with first and second axially or rotationally displaceable field magnetsHITACHI LTD·Filed 2001·Granted Dec 13, 2005·34 cites·19 claims
- 0475US4599685AControl circuit for power converter apparatusHITACHI LTD·Filed 1985·Granted Jul 8, 1986·33 cites·7 claims
- 0574US4965504AControl apparatus for inverter for driving AC motorHITACHI LTD·Filed 1989·Granted Oct 23, 1990·30 cites·22 claims
- 0672US4672520ACurrent-source power converting apparatus with self-extinction devicesHITACHI LTD·Filed 1985·Granted Jun 9, 1987·29 cites·4 claims
- 0771US4787021ACurrent-type converter apparatusHITACHI LTD·Filed 1988·Granted Nov 22, 1988·26 cites·17 claims
- 0869US6490182B2Power conversion apparatusHITACHI LTD·Filed 2001·Granted Dec 3, 2002·23 cites·22 claims
- 0969US4581693AApparatus for repeatedly applying short-circuit pulses to a current type inverter for output current controlHITACHI LTD·Filed 1984·Granted Apr 8, 1986·18 cites·9 claims
- 1068US6304468B2Phase synchronization system for connecting a power converter to a power distribution systemHITACHI LTD·Filed 2000·Granted Oct 16, 2001·23 cites·8 claims
- 1166US4926306AElectric power converterHITACHI LTD·Filed 1989·Granted May 15, 1990·27 cites·15 claims
- 1264US6703874B2Gate driver for MOS control semiconductor devicesHITACHI LTD·Filed 2003·Granted Mar 9, 2004·8 cites·8 claims
- 1361US4829416AApparatus for controlling power transducers of the pulse width modulation (PWM) control typeHITACHI LTD·Filed 1987·Granted May 9, 1989·21 cites·11 claims
- 1458US6452261B1Flat semiconductor device and power converter employing the sameHITACHI LTD·Filed 1997·Granted Sep 17, 2002·24 cites·4 claims
- 1558US6389041B1Synchronization system and synchronization method of multisystem control apparatusHITACHI LTD·Filed 1998·Granted May 14, 2002·31 cites·17 claims
- 1655US6809561B2Semiconductor power converting apparatusHITACHI LTD·Filed 2003·Granted Oct 26, 2004·8 cites·15 claims
- 1753US7158521B2Synchronization system and synchronization method of multisystem control apparatusHITACHI LTD·Filed 2002·Granted Jan 2, 2007·3 cites·7 claims
- 1849US6727516B2Semiconductor power conversion apparatusHITACHI LTD·Filed 2002·Granted Apr 27, 2004·3 cites·16 claims
- 1949US4757436ACurrent-type converter protecting apparatusHITACHI LTD·Filed 1987·Granted Jul 12, 1988·13 cites·10 claims
- 2047US2006033402A1Transport system and dynamo-electric machineHITACHI LTD·Filed 2005·Application pending·0 cites
- 2142US6038683AReplicated controller and fault recovery method thereofHITACHI LTD·Filed 1998·Granted Mar 14, 2000·15 cites·4 claims
- 2241US4779709AApparatus for controlling AC elevatorsHITACHI LTD·Filed 1986·Granted Oct 25, 1988·8 cites·7 claims
- 2339US6717177B2Semiconductor power conversion apparatusHITACHI LTD·Filed 2003·Granted Apr 6, 2004·0 cites·12 claims
- 2437US4549259AGate control circuit for current-type inverter apparatusHITACHI LTD·Filed 1983·Granted Oct 22, 1985·4 cites·2 claims
- 2537US2003015876A1Electric power variation compensating deviceFiled 2000·Application pending·0 cites
- 2636US2002145188A1Flat semiconductor device and power converter employing the sameFiled 2002·Application pending·0 cites
- 2735US2003042939A1Semiconductor power converting apparatusFiled 2002·Application pending·0 cites
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