Herbert Langen
15Patents
8h-index
14Co-inventors
69Inventor score
Filing activity: Nov 20, 1974 → Feb 6, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4599052A | Control device for metering pump | Electricity | 41 | Expired |
| US4010895A | System for preheating a water-cooled vehicle engine and for heating the interior of the vehicle | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5090896A | Central heating for motor vehicles and such mobile units | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5238472A | Particle filter that can be regenerated by burning free for the exhaust gases of internal combustion engines | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5707227A | Burner of a vehicle heater | Performing Operations; Transporting | 13 | Expired |
| US5456079A | Device for the thermal regeneration of particle filters for diesel engine exhaust gas | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5194718A | Method for connecting a glow plug for operation at two different voltages | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5605453A | Burner of a vehicle heater | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4536151A | Mixture preparation for engine-independent heaters | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4992021A | Side channel blower | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5045097A | Soot filter for diesel-powered vehicles | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5732880A | Heater for a vehicle powered by an internal-combustion engine | Performing Operations; Transporting | 4 | Expired |
| US4669973A | Combustion chamber for heating devices | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4650415A | Combustion chamber for heating devices | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4862846A | Cooling water heater for internal combustion engines | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.