Assignee
CARRIER CORP
3,730 granted patents·1,216 pending applications·64,023 citations·filing 1973–2025
Top patents by PatentIndex Score
4,946 records- 0199US6474087B1Method and apparatus for the control of economizer circuit flow for optimum performanceCARRIER CORP·Filed 2001·Granted Nov 5, 2002·175 cites·11 claims
- 0299US4523435AMethod and apparatus for controlling a refrigerant expansion valve in a refrigeration systemCARRIER CORP·Filed 1983·Granted Jun 18, 1985·153 cites·4 claims
- 0398US7458418B2Storage tank for hot water systemsCARRIER CORP·Filed 2005·Granted Dec 2, 2008·83 cites·12 claims
- 0498US7261762B2Technique for detecting and predicting air filter conditionCARRIER CORP·Filed 2004·Granted Aug 28, 2007·237 cites·23 claims
- 0598US7188482B2Fault diagnostics and prognostics based on distance fault classifiersCARRIER CORP·Filed 2005·Granted Mar 13, 2007·239 cites·20 claims
- 0698US6993414B2Detection of clogged filter in an HVAC systemCARRIER CORP·Filed 2003·Granted Jan 31, 2006·208 cites·11 claims
- 0798US6925823B2Refrigerant cycle with operating range extensionCARRIER CORP·Filed 2003·Granted Aug 9, 2005·123 cites·20 claims
- 0898US6116040AApparatus for cooling the power electronics of a refrigeration compressor driveCARRIER CORP·Filed 1999·Granted Sep 12, 2000·242 cites·16 claims
- 0998US6047556APulsed flow for capacity controlCARRIER CORP·Filed 1997·Granted Apr 11, 2000·156 cites·3 claims
- 1098US5279458ANetwork management controlCARRIER CORP·Filed 1991·Granted Jan 18, 1994·301 cites·3 claims
- 1198US5169294APressure ratio responsive unloaderCARRIER CORP·Filed 1991·Granted Dec 8, 1992·118 cites·5 claims
- 1298US4993928AScroll compressor with dual pocket axial complianceCARRIER CORP·Filed 1989·Granted Feb 19, 1991·77 cites·8 claims
- 1398US4527399AHigh-low superheat protection for a refrigeration system compressorCARRIER CORP·Filed 1984·Granted Jul 9, 1985·114 cites·2 claims
- 1497US11835244B2Evaporator with one or more leak mitigation dampersCARRIER CORP·Filed 2020·Granted Dec 5, 2023·4 cites·5 claims
- 1597US11092566B2Leak detection unit for refrigerant systemCARRIER CORP·Filed 2019·Granted Aug 17, 2021·17 cites·8 claims
- 1697US10540835B2Access control system with virtual card dataCARRIER CORP·Filed 2015·Granted Jan 21, 2020·16 cites·24 claims
- 1797US10488065B2Leak detection unit for refrigerant systemCARRIER CORP·Filed 2015·Granted Nov 26, 2019·19 cites·8 claims
- 1897US9758013B2Transport refrigeration system with engine shaft horsepower augmentationCARRIER CORP·Filed 2012·Granted Sep 12, 2017·43 cites·11 claims
- 1997US7360370B2Method of verifying proper installation of a zoned HVAC systemCARRIER CORP·Filed 2004·Granted Apr 22, 2008·169 cites·6 claims
- 2097US7287709B2Configurable multi-level thermostat backlightingCARRIER CORP·Filed 2004·Granted Oct 30, 2007·205 cites·13 claims
- 2197US7212887B2Service and diagnostic tool for HVAC systemsCARRIER CORP·Filed 2004·Granted May 1, 2007·259 cites·26 claims
- 2297US6688137B1Plate heat exchanger with a two-phase flow distributorCARRIER CORP·Filed 2002·Granted Feb 10, 2004·116 cites·8 claims
- 2397US6543741B1Vibration isolation for a transversely mounted compressorCARRIER CORP·Filed 2001·Granted Apr 8, 2003·75 cites·9 claims
- 2497US6434960B1Variable speed drive chiller systemCARRIER CORP·Filed 2001·Granted Aug 20, 2002·221 cites·17 claims
- 2597US6385980B1High pressure regulation in economized vapor compression cyclesCARRIER CORP·Filed 2000·Granted May 14, 2002·121 cites·24 claims
- 2697US6254009B1Communicating thermostatCARRIER CORP·Filed 1999·Granted Jul 3, 2001·209 cites·10 claims
- 2797US5947710ARotary compressor with reduced lubrication sensitivityCARRIER CORP·Filed 1997·Granted Sep 7, 1999·171 cites·17 claims
- 2897US5860411AModulating gas valve furnace control methodCARRIER CORP·Filed 1997·Granted Jan 19, 1999·141 cites·6 claims
- 2997US5669441AHeat transfer tube and method of manufactureCARRIER CORP·Filed 1996·Granted Sep 23, 1997·62 cites·2 claims
- 3097US4688547AMethod for providing variable output gas-fired furnace with a constant temperature rise and efficiencyCARRIER CORP·Filed 1986·Granted Aug 25, 1987·119 cites·2 claims
- 3197US4514991AVariable speed drive motor system with inverter controlCARRIER CORP·Filed 1983·Granted May 7, 1985·84 cites·4 claims
- 3296US11846120B2Latch assembly with removable batteryCARRIER CORP·Filed 2020·Granted Dec 19, 2023·10 cites·11 claims
- 3396US11448427B2Heat-recovery-enhanced refrigeration systemCARRIER CORP·Filed 2020·Granted Sep 20, 2022·4 cites·15 claims
- 3496US11356519B2Floor-plan based learning and registration of distributed devicesCARRIER CORP·Filed 2021·Granted Jun 7, 2022·6 cites·26 claims
- 3596US11079149B2System and method of diluting a leaked refrigerant in an HVAC/R systemCARRIER CORP·Filed 2016·Granted Aug 3, 2021·14 cites·13 claims
- 3696US10910903B2Dual rotor, coreless, electromagnetic machineCARRIER CORP·Filed 2019·Granted Feb 2, 2021·12 cites·16 claims
- 3796US10520465B2Gas detector utilizing an aqueous solutionCARRIER CORP·Filed 2017·Granted Dec 31, 2019·11 cites·4 claims
- 3896US10239728B2Intelligent building system for providing elevator occupancy information with anonymityCARRIER CORP·Filed 2016·Granted Mar 26, 2019·7 cites·14 claims
- 3996US10228168B2Compressor bearing coolingCARRIER CORP·Filed 2014·Granted Mar 12, 2019·19 cites·20 claims
- 4096US10015653B2Hospitality systemsCARRIER CORP·Filed 2015·Granted Jul 3, 2018·24 cites·17 claims
- 4196US7997092B2Refrigerant vapor compression system operating at or near zero loadCARRIER CORP·Filed 2007·Granted Aug 16, 2011·39 cites·15 claims
- 4296US7891201B1Refrigerant vapor compression system with flash tank receiverCARRIER CORP·Filed 2006·Granted Feb 22, 2011·43 cites·23 claims
- 4396US7854137B2Variable speed compressor motor control for low speed operationCARRIER CORP·Filed 2005·Granted Dec 21, 2010·42 cites·31 claims
- 4496US7775452B2Serial communicating HVAC systemCARRIER CORP·Filed 2004·Granted Aug 17, 2010·161 cites·29 claims
- 4596US7748640B2Stackable thermostatCARRIER CORP·Filed 2006·Granted Jul 6, 2010·150 cites·13 claims
- 4696US7266960B2Single integrated humidity and ventilation control in an HVAC systemCARRIER CORP·Filed 2005·Granted Sep 11, 2007·86 cites·16 claims
- 4796US6941770B1Hybrid reheat system with performance enhancementCARRIER CORP·Filed 2004·Granted Sep 13, 2005·84 cites·16 claims
- 4896US6711911B1Expansion valve controlCARRIER CORP·Filed 2002·Granted Mar 30, 2004·107 cites·24 claims
- 4996US6694750B1Refrigeration system employing multiple economizer circuitsCARRIER CORP·Filed 2002·Granted Feb 24, 2004·90 cites·14 claims
- 5096US6643567B2Energy consumption estimation using real time pricing informationCARRIER CORP·Filed 2002·Granted Nov 4, 2003·230 cites·19 claims
Showing the top 50 of 4,946 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when CARRIER CORP files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →