Inventor · disambiguated record
Sivakumar Gopalnarayanan
Also filed as: GOPALNARAYANAN SIVAKUMAR
36 granted patents·12 pending applications·232 citations·filing 2000–2024
96Inventor score
Top patents by PatentIndex Score
48 records- 0195US11971184B2Air mover refrigerant leak detection and risk mitigationRHEEM MFG CO·Filed 2022·Granted Apr 30, 2024·2 cites·19 claims
- 0293US11435101B2Air mover refrigerant leak detection and risk mitigationRHEEM MFG CO·Filed 2019·Granted Sep 6, 2022·6 cites·15 claims
- 0390US6698234B2Method for increasing efficiency of a vapor compression system by evaporator heatingCARRIER CORP·Filed 2002·Granted Mar 2, 2004·49 cites·25 claims
- 0489US11821662B2Thermal energy storage integrated heat pumpRHEEM MFG CO·Filed 2021·Granted Nov 21, 2023·1 cites·18 claims
- 0585US12018900B2Systems and methods for heat exchangeRHEEM MFG CO·Filed 2021·Granted Jun 25, 2024·1 cites·16 claims
- 0685US11859837B2Heating, ventilation, and air conditioning system economizers having sliding doorsRHEEM MFG CO·Filed 2021·Granted Jan 2, 2024·2 cites·20 claims
- 0785US11530857B2Air conditioning reheat systems and methods theretoRHEEM MFG CO·Filed 2020·Granted Dec 20, 2022·1 cites·20 claims
- 0885US2025020378A1Air conditioning reheat systems and methods theretoRHEEM MFG CO·Filed 2024·Application pending·0 cites
- 0984US7386985B2Detection of refrigerant charge adequacy based on multiple temperature measurementsCARRIER CORP·Filed 2005·Granted Jun 17, 2008·17 cites·9 claims
- 1084US6968708B2Refrigeration system having variable speed fanCARRIER CORP·Filed 2003·Granted Nov 29, 2005·35 cites·12 claims
- 1183US12313271B2Overflow sensor assembly in temperature control systemsRHEEM MFG CO·Filed 2024·Granted May 27, 2025·0 cites·20 claims
- 1283US11585575B2Dual-circuit heating, ventilation, air conditioning, and refrigeration systems and associated methodsRHEEM MFG CO·Filed 2020·Granted Feb 21, 2023·1 cites·18 claims
- 1383US2025060114A1Integrated space conditioning and water heating/cooling systems and methods theretoRHEEM MFG CO·Filed 2024·Application pending·0 cites
- 1482US2024230129A1Air mover refrigerant leak detection and risk mitigationRHEEM MFG CO·Filed 2024·Application pending·0 cites
- 1581US12173909B2Integrated space conditioning and water heating/cooling systems and methods theretoRHEEM MFG CO·Filed 2023·Granted Dec 24, 2024·0 cites·20 claims
- 1681US2024384943A1Systems and methods for heat exchangeRHEEM MFG CO·Filed 2024·Application pending·0 cites
- 1781US2025109898A1Low ambient temperature heat pump water heater systems, heat exchangers, and methods theretoRHEEM MFG CO·Filed 2024·Application pending·0 cites
- 1880US12135156B2Air conditioning reheat systems and methods theretoRHEEM MFG CO·Filed 2022·Granted Nov 5, 2024·0 cites·20 claims
- 1980US11548055B2Systems and methods for heat exchanger manufacturingRHEEM MFG CO·Filed 2022·Granted Jan 10, 2023·0 cites·20 claims
- 2079US7552596B2Dual thermochromic liquid crystal temperature sensing for refrigerant charge indicationCARRIER CORP·Filed 2004·Granted Jun 30, 2009·29 cites·12 claims
- 2178US11906183B2Overflow sensor assembly in temperature control systemsRHEEM MFG CO·Filed 2022·Granted Feb 20, 2024·0 cites·20 claims
- 2277US7419192B2Braze-free connector utilizing a sealant coated ferruleCARRIER CORP·Filed 2005·Granted Sep 2, 2008·11 cites·14 claims
- 2374US11338353B2Systems and methods for heat exchanger manufacturingRHEEM MFG CO·Filed 2020·Granted May 24, 2022·0 cites·19 claims
- 2474US10982887B2Expansion valve with selectable operation modesRHEEM MFG CO·Filed 2018·Granted Apr 20, 2021·1 cites·18 claims
- 2571US11209204B2Heat pump system defrosting operationsRHEEM MFG CO·Filed 2019·Granted Dec 28, 2021·1 cites·18 claims
- 2671US7472557B2Automatic refrigerant charging apparatusCARRIER CORP·Filed 2004·Granted Jan 6, 2009·19 cites·16 claims
- 2771US2022170673A1Heat Pump System Defrosting OperationsRHEEM MFG CO·Filed 2021·Application pending·0 cites
- 2870US12209783B2Low ambient temperature heat pump water heater systems, heat exchangers, and methods theretoRHEEM MFG CO·Filed 2021·Granted Jan 28, 2025·0 cites·15 claims
- 2969US11739952B2Integrated space conditioning and water heating/cooling systems and methods theretoRHEEM MFG CO·Filed 2020·Granted Aug 29, 2023·0 cites·18 claims
- 3066US11530829B2Overflow sensor assembly in temperature control systemsRHEEM MFG CO·Filed 2019·Granted Dec 20, 2022·0 cites·20 claims
- 3166US6647742B1Expander driven motor for auxiliary machineryCARRIER CORP·Filed 2002·Granted Nov 18, 2003·16 cites·14 claims
- 3264US11808494B2Heat pump water heater systems and methods for low ambient temperature conditionsRHEEM MFG CO·Filed 2021·Granted Nov 7, 2023·0 cites·20 claims
- 3364US11668503B2Expansion valve with selectable operation modesRHEEM MFG CO·Filed 2021·Granted Jun 6, 2023·0 cites·17 claims
- 3464US11338352B2Pressure expansion methods for heat exchanger manufacturingRHEEM MFG CO·Filed 2020·Granted May 24, 2022·0 cites·19 claims
- 3563US6470691B1Fluid transportATOFINA CHEM INC·Filed 2000·Granted Oct 29, 2002·6 cites·2 claims
- 3661US7712319B2Refrigerant charge adequacy gaugeCARRIER CORP·Filed 2004·Granted May 11, 2010·12 cites·7 claims
- 3761US7610765B2Refrigerant charge status indication method and deviceCARRIER CORP·Filed 2004·Granted Nov 3, 2009·11 cites·17 claims
- 3857US6584783B2Fluid transportATOFINA CHEM INC·Filed 2002·Granted Jul 1, 2003·6 cites·12 claims
- 3954US11781760B2Integrated space conditioning and water heating systems and methods theretoRHEEM MFG CO·Filed 2020·Granted Oct 10, 2023·0 cites·20 claims
- 4053US12347840B2Battery-integrated heat pump systems and methods theretoRHEEM MFG CO·Filed 2021·Granted Jul 1, 2025·0 cites·11 claims
- 4152US11906223B2Systems and methods for determining a fault of an air system for heating, ventilation and/or coolingRHEEM MFG CO·Filed 2021·Granted Feb 20, 2024·0 cites·17 claims
- 4252US2022325930A1Battery-integrated heat pump systems and methods of managing battery temperaturesRHEEM MFG CO·Filed 2021·Application pending·0 cites
- 4348US7086857B2Use of thermal insulation for noise abatementCARRIER CORP·Filed 2004·Granted Aug 8, 2006·5 cites·16 claims
- 4444US2006138771A1Braze-free connector for joining a pair of flow linesCARRIER CORP·Filed 2004·Application pending·0 cites
- 4544US2022034593A1Heat exchanger devices and systems and associated methodsRHEEM MFG CO·Filed 2020·Application pending·0 cites
- 4643US2006138772A1Braze-free connectorCARRIER CORP·Filed 2004·Application pending·0 cites
- 4742US2006137368A1Visual display of temperature differences for refrigerant charge indicationCARRIER CORP·Filed 2004·Application pending·0 cites
- 4837US2006137369A1Single sensor three-step refrigerant charge indicatorCARRIER CORP·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →