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.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →