Assignee
LENNOX IND INC
US·685 granted patents·94 pending applications·5,154 citations·filing 1973–2025
Top patents by PatentIndex Score
779 records- 0199US11441803B2HVAC system and method of circulating flammable refrigerantLENNOX IND INC·Filed 2021·Granted Sep 13, 2022·11 cites·21 claims
- 0298US9857090B2Programmable smart thermostatLENNOX IND INC·Filed 2015·Granted Jan 2, 2018·56 cites·12 claims
- 0398USD798310SDisplay screen with graphical user interfaceLENNOX IND INC·Filed 2015·Granted Sep 26, 2017·49 cites·1 claims
- 0498USD798311SDisplay screen with graphical user interfaceLENNOX IND INC·Filed 2015·Granted Sep 26, 2017·123 cites·1 claims
- 0598US6826921B1Air conditioning system with variable condenser reheat for enhanced dehumidificationLENNOX IND INC·Filed 2003·Granted Dec 7, 2004·184 cites·29 claims
- 0697US11781793B2Control systems and methods for preventing evaporator coil freezeLENNOX IND INC·Filed 2020·Granted Oct 10, 2023·4 cites·16 claims
- 0797US11644225B2Method and apparatus for refrigerant leak detectionLENNOX IND INC·Filed 2021·Granted May 9, 2023·3 cites·20 claims
- 0897US11578887B2HVAC system leak detectionLENNOX IND INC·Filed 2021·Granted Feb 14, 2023·7 cites·20 claims
- 0997US11293659B2Detection of a reversing valve faultLENNOX IND INC·Filed 2020·Granted Apr 5, 2022·13 cites·17 claims
- 1097US11150162B1Determination of pulley ratio of a belt-drive blowerLENNOX IND INC·Filed 2020·Granted Oct 19, 2021·6 cites·20 claims
- 1196US11747040B2Determination of blower flow rateLENNOX IND INC·Filed 2022·Granted Sep 5, 2023·2 cites·20 claims
- 1296US11519629B2Determination of blower flow rateLENNOX IND INC·Filed 2020·Granted Dec 6, 2022·3 cites·20 claims
- 1396US11255562B2HVAC control during demand response eventLENNOX IND INC·Filed 2020·Granted Feb 22, 2022·4 cites·20 claims
- 1496US11193685B2System and method for distinguishing HVAC system faultsLENNOX IND INC·Filed 2020·Granted Dec 7, 2021·5 cites·20 claims
- 1595US11879661B2Dynamic temperature control for a heating, ventilation, and air conditioning systemLENNOX IND INC·Filed 2022·Granted Jan 23, 2024·2 cites·20 claims
- 1695US11609046B2Detecting loss of charge in HVAC systemsLENNOX IND INC·Filed 2021·Granted Mar 21, 2023·3 cites·20 claims
- 1795US11378313B2Method and apparatus for refrigerant detector calibration confirmationLENNOX IND INC·Filed 2020·Granted Jul 5, 2022·3 cites·16 claims
- 1895US11293658B2System and method for identifying causes of HVAC system faultsLENNOX IND INC·Filed 2020·Granted Apr 5, 2022·4 cites·17 claims
- 1995US11287153B2Method and apparatus for risk reduction during refrigerant leakLENNOX IND INC·Filed 2019·Granted Mar 29, 2022·9 cites·20 claims
- 2095US11098915B2HVAC systems and methods with refrigerant purgeLENNOX IND INC·Filed 2019·Granted Aug 24, 2021·14 cites·20 claims
- 2195US11009249B2Peak demand response operation with improved sensible capacityLENNOX IND INC·Filed 2019·Granted May 18, 2021·10 cites·15 claims
- 2295US10941953B2HVAC system and method of circulating flammable refrigerantLENNOX IND INC·Filed 2018·Granted Mar 9, 2021·8 cites·20 claims
- 2395US10816232B2Systems and methods for pumping down flammable refrigerantLENNOX IND INC·Filed 2019·Granted Oct 27, 2020·12 cites·17 claims
- 2495US10767882B2Refrigerant pump down for an HVAC systemLENNOX IND INC·Filed 2018·Granted Sep 8, 2020·13 cites·23 claims
- 2595US10174967B2Multiple stage modulating gas fired heat exchangerLENNOX IND INC·Filed 2015·Granted Jan 8, 2019·8 cites·29 claims
- 2695USD734179SWall mountable thermostatLENNOX IND INC·Filed 2015·Granted Jul 14, 2015·98 cites·1 claims
- 2795US8352081B2Communication protocol system and method for a distributed-architecture heating, ventilation and air conditioning networkLENNOX IND INC·Filed 2009·Granted Jan 8, 2013·35 cites·20 claims
- 2895US5752500ADraft hood locating device for combustion apparatusLENNOX IND INC·Filed 1996·Granted May 19, 1998·128 cites·22 claims
- 2994US12203671B2Automatic staging of multiple HVAC systems during a peak demand responseLENNOX IND INC·Filed 2023·Granted Jan 21, 2025·3 cites·20 claims
- 3094US11802703B2Automatic staging of multiple HVAC systems during a peak demand responseLENNOX IND INC·Filed 2022·Granted Oct 31, 2023·3 cites·20 claims
- 3194US11143425B1Determination of return air temperatureLENNOX IND INC·Filed 2020·Granted Oct 12, 2021·3 cites·20 claims
- 3294US11060775B2Method and apparatus for refrigerant leak detectionLENNOX IND INC·Filed 2017·Granted Jul 13, 2021·10 cites·17 claims
- 3394US10480807B2HVAC systems and methods with refrigerant leak detectionLENNOX IND INC·Filed 2017·Granted Nov 19, 2019·11 cites·6 claims
- 3494US10024591B2Sensor failure error handlingLENNOX IND INC·Filed 2015·Granted Jul 17, 2018·7 cites·7 claims
- 3594USD733591SWall mountable thermostatLENNOX IND INC·Filed 2015·Granted Jul 7, 2015·117 cites·1 claims
- 3694US8876092B2Motor mounting assembly with tunable vibration and noise reduction capabilitiesLENNOX IND INC·Filed 2012·Granted Nov 4, 2014·24 cites·19 claims
- 3794US7823404B2Air conditioning system with variable condenser reheat and refrigerant flow sequencerLENNOX IND INC·Filed 2006·Granted Nov 2, 2010·30 cites·16 claims
- 3894US3978382AControl apparatus for two-speed, single phase compressorLENNOX IND INC·Filed 1974·Granted Aug 31, 1976·73 cites·10 claims
- 3993US11799669B2Secure provisioning of digital certificateLENNOX IND INC·Filed 2022·Granted Oct 24, 2023·2 cites·17 claims
- 4093US11486599B2HVAC system operated with adaptive discharge air temperature setpointLENNOX IND INC·Filed 2021·Granted Nov 1, 2022·3 cites·20 claims
- 4193US11431689B2Secure payload deliveryLENNOX IND INC·Filed 2020·Granted Aug 30, 2022·3 cites·18 claims
- 4293US11193686B2Determination of stuck reversing valveLENNOX IND INC·Filed 2020·Granted Dec 7, 2021·3 cites·20 claims
- 4393US11193683B2Error correction for predictive schedules for a thermostatLENNOX IND INC·Filed 2019·Granted Dec 7, 2021·6 cites·17 claims
- 4493US10928091B2Systems and methods for pumping down flammable refrigerantLENNOX IND INC·Filed 2019·Granted Feb 23, 2021·6 cites·20 claims
- 4593US10473343B2Method and apparatus for reduction of condensate re-evaporation during cooling part-load duty cyclingLENNOX IND INC·Filed 2017·Granted Nov 12, 2019·7 cites·20 claims
- 4693US9765965B2Furnace, a method for operating a furnace and a furnace controller configured for the sameLENNOX IND INC·Filed 2016·Granted Sep 19, 2017·6 cites·16 claims
- 4793USD759012SCentral controllerLENNOX IND INC·Filed 2015·Granted Jun 14, 2016·67 cites·1 claims
- 4893US3935519AControl apparatus for two-speed compressorLENNOX IND INC·Filed 1974·Granted Jan 27, 1976·72 cites·4 claims
- 4992US12117188B2Indoor air quality monitors for commercial HVAC systemsLENNOX IND INC·Filed 2022·Granted Oct 15, 2024·4 cites·20 claims
- 5092US11920819B2HVAC system operated with adaptive discharge air temperature setpointLENNOX IND INC·Filed 2022·Granted Mar 5, 2024·2 cites·20 claims
Showing the top 50 of 779 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when LENNOX IND INC 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 →