Inventor · disambiguated record
Hidetoshi Umida
Also filed as: UMIDA HIDETOSHI
18 granted patents·1 pending application·301 citations·filing 1993–2019
95Inventor score
Top patents by PatentIndex Score
19 records- 0191US10763848B2Gate drive circuitFUJI ELECTRIC CO LTD·Filed 2019·Granted Sep 1, 2020·9 cites·6 claims
- 0280US6377018B2Speed sensorless vector control apparatusFUJI ELECTRIC CO LTD·Filed 2001·Granted Apr 23, 2002·28 cites·4 claims
- 0376US5489829AParameter identifierFUJI ELECTRIC CO LTD·Filed 1993·Granted Feb 6, 1996·42 cites·4 claims
- 0470US5525877AMotor vibration control device and method for matching a motor speed detected value with a motor speed reference valueFUJI ELECTRIC CO LTD·Filed 1994·Granted Jun 11, 1996·28 cites·10 claims
- 0569US5828199AVariable speed controller for an induction motorFUJI ELECTRIC CO LTD·Filed 1997·Granted Oct 27, 1998·32 cites·6 claims
- 0665US6060860AControl apparatus for variably controlling speed induction motorFUJI ELECTRIC CO LTD·Filed 1999·Granted May 9, 2000·25 cites·24 claims
- 0764US6404162B1Variable-speed controlling device for use with an induction motorFUJI ELECTRIC CO LTD·Filed 2000·Granted Jun 11, 2002·6 cites·7 claims
- 0862US5532570AVariable speed control apparatus for induction motorFUJI ELECTRIC CO LTD·Filed 1995·Granted Jul 2, 1996·24 cites·18 claims
- 0958US5959429AVariable speed controlling device for induction motorFUJI ELECTRIC CO LTD·Filed 1998·Granted Sep 28, 1999·19 cites·10 claims
- 1058US5506930AControl apparatus for a variable speed motorFUJI ELECTRIC CO LTD·Filed 1994·Granted Apr 9, 1996·19 cites·16 claims
- 1155US7180259B2Driving apparatus for driving multiple induction motorsFUJI ELECTRIC SYSTEMS CO LTD·Filed 2005·Granted Feb 20, 2007·3 cites·2 claims
- 1252US5623190AMethod and apparatus for controlling an AC motor and detecting malfunctionsFUJI ELECTRIC CO LTD·Filed 1994·Granted Apr 22, 1997·14 cites·13 claims
- 1349US5859521AVariable speed controller for an AC motorFUJI ELECTRIC CO LTD·Filed 1997·Granted Jan 12, 1999·15 cites·11 claims
- 1446US5608302AApparatus for driving an AC motor at variable speedsFUJI ELECTRIC CO LTD·Filed 1994·Granted Mar 4, 1997·11 cites·19 claims
- 1544US10700630B2Inverter that adjusts voltage command values and control method of inverterFUJI ELECTRIC CO LTD·Filed 2018·Granted Jun 30, 2020·0 cites·31 claims
- 1643US2014354194A1Motor drive systemFUJI ELECTRIC CO LTD·Filed 2014·Application pending·0 cites
- 1742US5880572AVariable-speed control method and apparatus for AC motorFUJI ELECTRIC CO LTD·Filed 1997·Granted Mar 9, 1999·11 cites·16 claims
- 1838US5734251AControl apparatus for AC motorFUJI ELECTRIC CO LTD·Filed 1996·Granted Mar 31, 1998·8 cites·16 claims
- 1937US6259611B1PWM power converterFUJI ELECTRIC CO LTD·Filed 1999·Granted Jul 10, 2001·7 cites·8 claims
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