Inventor
HUNG DER-KAI
US30 patents
⚠️ This page may combine multiple inventors who share the name “HUNG DER-KAI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LENNOX IND INC
25 patentsUS9297565B2Mar 29, 2016
Charge management for air conditioning
LENNOX IND INC11 citations83
US10365025B2Jul 30, 2019
Methods and systems for operating HVAC systems in low load conditions
LENNOX IND INC1 citations72
US9692347B2Jun 27, 2017
Airflow-confirming HVAC systems and methods with variable speed blower
LENNOX IND INC3 citations72
US10047965B2Aug 14, 2018
System for managing lubricant levels in tandem compressor assemblies of an HVAC system
LENNOX IND INC2 citations71
US9581371B2Feb 28, 2017
System for operating an HVAC system having tandem compressors
LENNOX IND INC2 citations71
US9488400B2Nov 8, 2016
System for managing lubricant levels in tandem compressor assemblies of an HVAC system
LENNOX IND INC5 citations71
US10801765B2Oct 13, 2020
Variable speed blower control for HVAC systems
LENNOX IND INC4 citations67
US11885570B2Jan 30, 2024
Cooling system
LENNOX IND INC0 citations62
US11573038B2Feb 7, 2023
Methods and systems for operating HVAC systems in low load conditions
LENNOX IND INC0 citations62
US11493250B2Nov 8, 2022
Methods and systems for operating HVAC systems in low load conditions
LENNOX IND INC0 citations62
US11384987B2Jul 12, 2022
Cooling system
LENNOX IND INC1 citations62
US11092368B2Aug 17, 2021
Methods and systems for operating HVAC systems in low load conditions
LENNOX IND INC0 citations62
US12158282B2Dec 3, 2024
Variable refrigerant flow system
LENNOX IND INC0 citations59
US12000632B2Jun 4, 2024
Controlling metering devices
LENNOX IND INC0 citations59
US11828486B2Nov 28, 2023
Variable refrigerant flow system with reheating of dehumidified air
LENNOX IND INC0 citations59
US11512882B2Nov 29, 2022
Controlling metering devices
LENNOX IND INC0 citations59
US11255553B2Feb 22, 2022
Variable refrigerant flow system with reheating of dehumidified air
LENNOX IND INC1 citations59
US10197304B2Feb 5, 2019
Tandem compressor discharge pressure and temperature control logic
LENNOX IND INC1 citations56
US12560369B2Feb 24, 2026
Control scheme for automatic fan mode for use with variable refrigerant flow systems
LENNOX IND INC0 citations53
US11397040B2Jul 26, 2022
Control scheme for automatic fan mode for use with variable refrigerant flow systems
LENNOX IND INC0 citations53
US10156396B2Dec 18, 2018
System for operating an HVAC system having tandem compressors
LENNOX IND INC0 citations51
US9927135B2Mar 27, 2018
Charge management for air conditioning
LENNOX IND INC0 citations51
US9989288B2Jun 5, 2018
System for managing lubricant levels in tandem compressor assemblies of an HVAC system
LENNOX IND INC0 citations50
US10337780B2Jul 2, 2019
Variable refrigerant flow system operation in low ambient conditions
LENNOX IND INC0 citations41
US9759468B2Sep 12, 2017
System for controlling operation of an HVAC system having tandem compressors
LENNOX IND INC0 citations40