Marc Graaf
32Patents
4h-index
38Co-inventors
59Inventor score
Filing activity: Oct 26, 2005 → Mar 13, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9242527B2 | Refrigerant circuit of an HVAC system of a motor vehicle | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US9242528B2 | Heat exchanger arrangement and air conditioning system of a motor vehicle | Performing Operations; Transporting | 5 | Active |
| US8959936B2 | Method for operation of an HVAC system | Performing Operations; Transporting | 4 | Active |
| US8524387B2 | Battery unit for hybrid or electric vehicles | Emerging Cross-Sectional Technologies | 4 | Active |
| US10787061B2 | Heat pump system with additional heat source for evaporation of refrigerant | Performing Operations; Transporting | 4 | Active |
| US8037698B2 | Air conditioning unit for motor vehicles and method for its operation | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US9530994B2 | Heat exchanger for temperature control of vehicle batteries | Emerging Cross-Sectional Technologies | 3 | Active |
| US10875385B2 | Climate control system of a motor vehicle and method for operating the climate control system | Performing Operations; Transporting | 3 | Active |
| US9346336B2 | Refrigerant circuit of an air conditioner with heat pump | Performing Operations; Transporting | 2 | Active |
| US10710433B2 | AC-system with very high cooling capacity | Emerging Cross-Sectional Technologies | 2 | Active |
| US9821625B2 | Heat exchanger assembly for heat absorption and climate control system of a motor vehicle | Performing Operations; Transporting | 2 | Active |
| US10040334B2 | R744 based heat pump system with a water cooled gas cooler for cooling, heating and dehumidification of an EV/HEV | Performing Operations; Transporting | 2 | Active |
| US10914504B2 | Device and method for icing prevention regulation for heat pump evaporators | Performing Operations; Transporting | 2 | Active |
| US9897356B2 | Refrigeration plant with refrigerant evaporator arrangement and process for parallel air and battery contact cooling | Emerging Cross-Sectional Technologies | 2 | Active |
| US10160290B2 | Modular designed high performance heat pump system for a vehicle with low waste heat radiation | Performing Operations; Transporting | 2 | Active |
| US9963010B2 | Air conditioning system for an automobile | Performing Operations; Transporting | 1 | Active |
| US10989451B2 | Oil management in a refrigeration system—compressor oil cooler integrated into gascooler | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US8733125B2 | Refrigerant accumulator for motor vehicle air conditioning units | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10017028B2 | Heat exchanger for refrigerant circuitry | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US9481225B2 | Modular air conditioning system with heat pump functionality | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US9821627B2 | Air-conditioning system for a motor vehicle | Performing Operations; Transporting | 1 | Active |
| US9683671B2 | Valve block assembly for several valves | Emerging Cross-Sectional Technologies | 1 | Active |
| US10017031B2 | Heat exchanger arrangement for heat uptake and air conditioning system of a motor vehicle | Performing Operations; Transporting | 1 | Active |
| US11781657B2 | 3-2 way expansion valve | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10363792B2 | Air-conditioning system for cooling and drying air in passenger compartment of vehicle | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.