Inventor
GOPALNARAYANAN SIVAKUMAR
US37 patents
⚠️ This page may combine multiple inventors who share the name “GOPALNARAYANAN SIVAKUMAR”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RHEEM MFG CO
25 patentsUS11435101B2Sep 6, 2022
Air mover refrigerant leak detection and risk mitigation
RHEEM MFG CO6 citations84
US11971184B2Apr 30, 2024
Air mover refrigerant leak detection and risk mitigation
RHEEM MFG CO2 citations71
US11859837B2Jan 2, 2024
Heating, ventilation, and air conditioning system economizers having sliding doors
RHEEM MFG CO2 citations65
US12578128B2Mar 17, 2026
Thermal energy storage integrated heat pump
RHEEM MFG CO0 citations62
US12173909B2Dec 24, 2024
Integrated space conditioning and water heating/cooling systems and methods thereto
RHEEM MFG CO0 citations62
US11821662B2Nov 21, 2023
Thermal energy storage integrated heat pump
RHEEM MFG CO1 citations62
US11739952B2Aug 29, 2023
Integrated space conditioning and water heating/cooling systems and methods thereto
RHEEM MFG CO0 citations62
US11585575B2Feb 21, 2023
Dual-circuit heating, ventilation, air conditioning, and refrigeration systems and associated methods
RHEEM MFG CO1 citations62
US11338352B2May 24, 2022
Pressure expansion methods for heat exchanger manufacturing
RHEEM MFG CO0 citations62
US11209204B2Dec 28, 2021
Heat pump system defrosting operations
RHEEM MFG CO1 citations62
US11548055B2Jan 10, 2023
Systems and methods for heat exchanger manufacturing
RHEEM MFG CO0 citations60
US11338353B2May 24, 2022
Systems and methods for heat exchanger manufacturing
RHEEM MFG CO0 citations60
US12313271B2May 27, 2025
Overflow sensor assembly in temperature control systems
RHEEM MFG CO0 citations59
US12018900B2Jun 25, 2024
Systems and methods for heat exchange
RHEEM MFG CO1 citations59
US11906183B2Feb 20, 2024
Overflow sensor assembly in temperature control systems
RHEEM MFG CO0 citations59
US11530829B2Dec 20, 2022
Overflow sensor assembly in temperature control systems
RHEEM MFG CO0 citations59
US12135156B2Nov 5, 2024
Air conditioning reheat systems and methods thereto
RHEEM MFG CO0 citations57
US11530857B2Dec 20, 2022
Air conditioning reheat systems and methods thereto
RHEEM MFG CO1 citations57
US11668503B2Jun 6, 2023
Expansion valve with selectable operation modes
RHEEM MFG CO0 citations53
US10982887B2Apr 20, 2021
Expansion valve with selectable operation modes
RHEEM MFG CO1 citations53
US12347840B2Jul 1, 2025
Battery-integrated heat pump systems and methods thereto
RHEEM MFG CO0 citations52
US11808494B2Nov 7, 2023
Heat pump water heater systems and methods for low ambient temperature conditions
RHEEM MFG CO0 citations52
US11781760B2Oct 10, 2023
Integrated space conditioning and water heating systems and methods thereto
RHEEM MFG CO0 citations49
US12209783B2Jan 28, 2025
Low ambient temperature heat pump water heater systems, heat exchangers, and methods thereto
RHEEM MFG CO0 citations47
US11906223B2Feb 20, 2024
Systems and methods for determining a fault of an air system for heating, ventilation and/or cooling
RHEEM MFG CO0 citations47
CARRIER CORP
10 patentsUS6968708B2Nov 29, 2005
Refrigeration system having variable speed fan
CARRIER CORP35 citations92
US6698234B2Mar 2, 2004
Method for increasing efficiency of a vapor compression system by evaporator heating
CARRIER CORP49 citations92
US7552596B2Jun 30, 2009
Dual thermochromic liquid crystal temperature sensing for refrigerant charge indication
CARRIER CORP29 citations89
US7610765B2Nov 3, 2009
Refrigerant charge status indication method and device
CARRIER CORP11 citations83
US7472557B2Jan 6, 2009
Automatic refrigerant charging apparatus
CARRIER CORP19 citations83
US7419192B2Sep 2, 2008
Braze-free connector utilizing a sealant coated ferrule
CARRIER CORP11 citations82
US7386985B2Jun 17, 2008
Detection of refrigerant charge adequacy based on multiple temperature measurements
CARRIER CORP17 citations82
US6647742B1Nov 18, 2003
Expander driven motor for auxiliary machinery
CARRIER CORP16 citations80
US7712319B2May 11, 2010
Refrigerant charge adequacy gauge
CARRIER CORP12 citations78
US7086857B2Aug 8, 2006
Use of thermal insulation for noise abatement
CARRIER CORP5 citations61