Der-Kai Hung
29Patents
3h-index
25Co-inventors
59Inventor score
Filing activity: Dec 15, 2011 → Oct 18, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8779698B2 | Automatic variable speed motor drive bypass | Emerging Cross-Sectional Technologies | 13 | Active |
| US9297565B2 | Charge management for air conditioning | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US8931288B2 | Pressure regulation of an air conditioner | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US9488400B2 | System for managing lubricant levels in tandem compressor assemblies of an HVAC system | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US9692347B2 | Airflow-confirming HVAC systems and methods with variable speed blower | Emerging Cross-Sectional Technologies | 2 | Active |
| US10047965B2 | System for managing lubricant levels in tandem compressor assemblies of an HVAC system | Emerging Cross-Sectional Technologies | 2 | Active |
| US9677797B2 | Inverter controller, method of operation thereof and field-installable retrofit kit incorporating the same | Emerging Cross-Sectional Technologies | 2 | Active |
| US10801765B2 | Variable speed blower control for HVAC systems | Emerging Cross-Sectional Technologies | 2 | Active |
| US11255553B2 | Variable refrigerant flow system with reheating of dehumidified air | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10197304B2 | Tandem compressor discharge pressure and temperature control logic | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10365025B2 | Methods and systems for operating HVAC systems in low load conditions | Emerging Cross-Sectional Technologies | 1 | Active |
| US9581371B2 | System for operating an HVAC system having tandem compressors | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10337777B2 | Controlling air conditioning systems | Emerging Cross-Sectional Technologies | 0 | Active |
| US10156396B2 | System for operating an HVAC system having tandem compressors | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11493250B2 | Methods and systems for operating HVAC systems in low load conditions | Emerging Cross-Sectional Technologies | 0 | Active |
| US11573038B2 | Methods and systems for operating HVAC systems in low load conditions | Emerging Cross-Sectional Technologies | 0 | Active |
| US11512882B2 | Controlling metering devices | Emerging Cross-Sectional Technologies | 0 | Active |
| US9759468B2 | System for controlling operation of an HVAC system having tandem compressors | Emerging Cross-Sectional Technologies | 0 | Active |
| US10337780B2 | Variable refrigerant flow system operation in low ambient conditions | Emerging Cross-Sectional Technologies | 0 | Active |
| US12000632B2 | Controlling metering devices | Emerging Cross-Sectional Technologies | 0 | Active |
| US11092368B2 | Methods and systems for operating HVAC systems in low load conditions | Emerging Cross-Sectional Technologies | 0 | Active |
| US10690386B2 | Controlling metering devices | Emerging Cross-Sectional Technologies | 0 | Active |
| US11885570B2 | Cooling system | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9927135B2 | Charge management for air conditioning | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9989288B2 | System for managing lubricant levels in tandem compressor assemblies of an HVAC system | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.