Inventor · disambiguated record
Ismail Agirman
Also filed as: AGIRMAN ISMAIL
53 granted patents·21 pending applications·318 citations·filing 2000–2025
97Inventor score
Top patents by PatentIndex Score
74 records- 0198US10381968B2Converter pulse width modulation strategies for three phase regenerative drivesOTIS ELEVATOR CO·Filed 2017·Granted Aug 13, 2019·30 cites·22 claims
- 0297US9906183B1Parallel interleaved 2-level or 3-level regenerative drivesOTIS ELEVATOR CO·Filed 2017·Granted Feb 27, 2018·31 cites·28 claims
- 0397US8230978B2Elevator regenerative drive with automatic rescue operationAGIRMAN ISMAIL·Filed 2007·Granted Jul 31, 2012·59 cites·23 claims
- 0491US11897725B2Adjustment of drop rate of elevator car with electromagnetic brake systemOTIS ELEVATOR CO·Filed 2020·Granted Feb 13, 2024·2 cites·14 claims
- 0590US8789659B2System and method for operating a motor during normal and power failure conditionsAGIRMAN ISMAIL·Filed 2012·Granted Jul 29, 2014·13 cites·23 claims
- 0690US8127894B2Elevator motor drive tolerant of an irregular power sourceAGIRMAN ISMAIL·Filed 2005·Granted Mar 6, 2012·26 cites·20 claims
- 0789US10218262B1Hybrid direct current link system for a regenerative driveOTIS ELEVATOR CO·Filed 2017·Granted Feb 26, 2019·6 cites·14 claims
- 0888US6492788B1Method and apparatus for encoderless operation of a permanent magnet synchronous motor in an elevatorOTIS ELEVATOR CO·Filed 2000·Granted Dec 10, 2002·65 cites·20 claims
- 0986US11772508B2Intelligent charging connector for transport refrigeration systemCARRIER CORP·Filed 2020·Granted Oct 3, 2023·2 cites·8 claims
- 1085US8629637B2Operation of a three-phase regenerative drive from mixed DC and single phase AC power sourcesBLASKO VLADIMIR·Filed 2008·Granted Jan 14, 2014·16 cites·20 claims
- 1182US10059563B2Elevator car speed control in a battery powered elevator systemOTIS ELEVATOR CO·Filed 2013·Granted Aug 28, 2018·7 cites·17 claims
- 1276US10008917B2Bus capacitor bank configuration for a multi-level regenerative driveOTIS ELEVATOR CO·Filed 2013·Granted Jun 26, 2018·4 cites·16 claims
- 1374US12492838B2Motor identification testCARRIER CORP·Filed 2023·Granted Dec 9, 2025·0 cites·20 claims
- 1473US6459599B1Determining phase of AC mains in PWM controlled converters without voltage sensorsOTIS ELEVATOR CO·Filed 2001·Granted Oct 1, 2002·30 cites·4 claims
- 1572US12312211B2Power management in an elevator systemOTIS ELEVATOR CO·Filed 2019·Granted May 27, 2025·1 cites·13 claims
- 1672US10273119B2Elevator load weighing systemOTIS ELEVATOR CO·Filed 2015·Granted Apr 30, 2019·1 cites·15 claims
- 1771US12018875B2Motor braking for air conditioning systemCARRIER CORP·Filed 2022·Granted Jun 25, 2024·0 cites·11 claims
- 1869US9815665B2Battery mounting in elevator hoistwayROGERS KYLE W·Filed 2012·Granted Nov 14, 2017·4 cites·8 claims
- 1968US12470162B2Active converter for air conditioning systemsCARRIER CORP·Filed 2022·Granted Nov 11, 2025·0 cites·14 claims
- 2068US12328080B2Boost converter state controlCARRIER CORP·Filed 2022·Granted Jun 10, 2025·0 cites·15 claims
- 2168US9511976B2Position feedback for elevator systemKANG KEUNMO·Filed 2011·Granted Dec 6, 2016·4 cites·16 claims
- 2266US10221038B2Control strategies for multilevel line regenerative driveOTIS ELEVATOR CO·Filed 2013·Granted Mar 5, 2019·2 cites·16 claims
- 2366US2025158535A1Dc bus capacitor assemblies for vienna vfd in air conditioning systemsCARRIER CORP·Filed 2025·Application pending·0 cites
- 2464US12355339B2Hybrid power system for transport refrigeration systemsCARRIER CORP·Filed 2023·Granted Jul 8, 2025·0 cites·10 claims
- 2563US12085291B2Dual mode converter for air conditioning systemCARRIER CORP·Filed 2022·Granted Sep 10, 2024·0 cites·11 claims
- 2663US10343872B2Elevator system having battery and energy storage deviceOTIS ELEVATOR CO·Filed 2013·Granted Jul 9, 2019·2 cites·10 claims
- 2762US10287131B2Elevator drive control to protect drive components from moistureOTIS ELEVATOR CO·Filed 2017·Granted May 14, 2019·0 cites·20 claims
- 2862US9586789B2Elevator braking in a battery powered elevator systemOTIS ELEVATOR CO·Filed 2013·Granted Mar 7, 2017·1 cites·15 claims
- 2962US2025257882A1Supplemental electric heater assembly for a heat pumpCARRIER CORP·Filed 2025·Application pending·0 cites
- 3061US12453043B2Mechanically expanded microfin tube liquid cooled heat sinkCARRIER CORP·Filed 2022·Granted Oct 21, 2025·0 cites·19 claims
- 3161US2025293540A1Battery-based active magnetic bearing system and a power supply circuit thereofCARRIER CORP·Filed 2025·Application pending·0 cites
- 3260US12408311B2Combined liquid and air cooled power electronics assemblyCARRIER CORP·Filed 2022·Granted Sep 2, 2025·0 cites·20 claims
- 3360US11464136B2Hybrid cooling for power electronics unitCARRIER CORP·Filed 2021·Granted Oct 4, 2022·0 cites·18 claims
- 3460US10654682B2Conveyance system having paralleled drivesOTIS ELEVATOR CO·Filed 2015·Granted May 19, 2020·1 cites·18 claims
- 3558US8006808B2Managing an encoder malfunction in an elevator drive systemOTIS ELEVATOR CO·Filed 2006·Granted Aug 30, 2011·4 cites·23 claims
- 3658US2025246911A1Reduced topolgy power converters for self-powered air conditoining systemCARRIER CORP·Filed 2024·Application pending·0 cites
- 3758US2024356469A1Detection method and apparatus for motor parametersCARRIER CORP·Filed 2024·Application pending·0 cites
- 3857US2023108226A1Dc output voltage regulation in converter for air conditioning systemsCARRIER CORP·Filed 2022·Application pending·0 cites
- 3957US2024206122A1Refrigerant circuit and cooling system for vfd heat sink and devicesCARRIER CORP·Filed 2023·Application pending·0 cites
- 4056US9957131B2Elevator speed controlOTIS ELEVATOR CO·Filed 2012·Granted May 1, 2018·1 cites·10 claims
- 4155US11554642B2Voltage conversion system for transport refrigeration systemCARRIER CORP·Filed 2020·Granted Jan 17, 2023·0 cites·18 claims
- 4255US10246294B2Bus capacitor bank configuration for a regenerative driveOTIS ELEVATOR CO·Filed 2013·Granted Apr 2, 2019·1 cites·20 claims
- 4355US10099894B2Active damping of a hovering elevator car based on vertical oscillation of the hovering elevator carOTIS ELEVATOR CO·Filed 2013·Granted Oct 16, 2018·1 cites·20 claims
- 4455US2023128951A1Heat exchanger for power electronicsCARRIER CORP·Filed 2022·Application pending·0 cites
- 4554US11988421B2Heat exchanger for power electronicsCARRIER CORP·Filed 2022·Granted May 21, 2024·0 cites·19 claims
- 4654US11404972B2Power module and converter with asymmetrical semiconductor rating arrangementCARRIER CORP·Filed 2020·Granted Aug 2, 2022·0 cites·8 claims
- 4754US11398794B2Variable frequency drive thermal managementCARRIER CORP·Filed 2019·Granted Jul 26, 2022·0 cites·12 claims
- 4854US10745239B2Electromagnetic brake system for an elevator with variable rate of engagementOTIS ELEVATOR CO·Filed 2015·Granted Aug 18, 2020·0 cites·14 claims
- 4954US2023213256A1Current regulation in air conditioning systemsCARRIER CORP·Filed 2023·Application pending·0 cites
- 5054US2023258348A1Thermal regulation of drive in air conditioning systemsCARRIER CORP·Filed 2023·Application pending·0 cites
Showing the top 50 of 74 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →