Oliver Kaefer
19Patents
6h-index
31Co-inventors
62Inventor score
Filing activity: Sep 12, 1997 → Aug 26, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5967185A | Rotary valve | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6899162B2 | Device for cooling and heating a motor vehicle | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US6185950A | Sensor for detecting solar insolation | Physics | 17 | Expired |
| US6900561B2 | Electric machine, especially a generator for motor vehicles | Electricity | 16 | Expired |
| US5934987A | Device and method for controlling air conduction elements of a vehicle | Physics | 13 | Expired |
| US8298117B2 | Method for operating a hybrid drive system having a torque converter | Emerging Cross-Sectional Technologies | 10 | Active |
| US8651998B2 | Method for controlling a hybrid drive | Emerging Cross-Sectional Technologies | 6 | Active |
| US8087484B2 | Method for limiting setpoint torques during engine control | Emerging Cross-Sectional Technologies | 5 | Active |
| US8529399B2 | Method for controlling a hybrid drive | Emerging Cross-Sectional Technologies | 5 | Active |
| US8622120B2 | Method for influencing the temperature of an electromechanical component and device for carrying out the method | Emerging Cross-Sectional Technologies | 3 | Active |
| US9401617B2 | Hybrid drive device | Emerging Cross-Sectional Technologies | 3 | Active |
| US8548658B2 | Method for the fail-safe operation of a hybrid vehicle for the controlled initiation of a substitute measure allowing an operation of the vehicle under emergency conditions, and device for implementing this method | Emerging Cross-Sectional Technologies | 3 | Active |
| US8753246B2 | Method and device for starting an internal combustion engine of a hybrid drive train | Emerging Cross-Sectional Technologies | 2 | Active |
| US8219272B2 | Method for monitoring multi-motor drive | Emerging Cross-Sectional Technologies | 2 | Active |
| US7839014B2 | Pulse-width modulation rectifier having an emergency generator operating mode | Emerging Cross-Sectional Technologies | 2 | Active |
| US9815448B2 | Method for simplifying torque monitoring, in particular for hybrid drives | Emerging Cross-Sectional Technologies | 1 | Active |
| US6931342B2 | Regulating device and method to regulate and/or calibrate a mixing valve | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8855841B2 | Method for operating an electric vehicle | Emerging Cross-Sectional Technologies | 1 | Active |
| US8433464B2 | Method for simplifying torque distribution in multiple drive systems | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.