Gerhard Hettich
30Patents
16h-index
47Co-inventors
77Inventor score
Filing activity: May 11, 1982 → Apr 20, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5033295A | Device for transmission and evaluation of measurement signals for the tire pressure of motor vehicles | Performing Operations; Transporting | 170 | Expired |
| US4845649A | Sensor for measuring physical dimensions and process for balancing the sensor | Physics | 99 | Expired |
| US4712064A | Magnetoresistive sensor for detecting position or speed of a ferromagnetic body | Electricity | 63 | Expired |
| US4954677A | Tire pressure sensor for motor vehicles | Performing Operations; Transporting | 45 | Expired |
| US5071259A | Sensor for measuring the pressure and temperature of tires | Performing Operations; Transporting | 38 | Expired |
| US5140851A | Circuit arrangement for monitoring pressure and temperature of tires | Performing Operations; Transporting | 35 | Expired |
| US4733179A | Method of determining an interference-magnetic field in a motor vehicle provided with an electronic compass | Physics | 33 | Expired |
| US5035137A | Tire pressure sensor for motor vehicles | Physics | 29 | Expired |
| US4725957A | Process for correcting angle errors in an electronic compass in vehicles | Physics | 27 | Expired |
| US5090237A | Pressure sensor for determining tire pressure | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4728888A | Magnetometer with time coded output of measured magnetic fields | Physics | 26 | Expired |
| US4729172A | Process for establishing the driving direction of a vehicle with an electronic compass | Physics | 23 | Expired |
| US5506567A | Process for monitoring the openings to an enclosed space | Physics | 23 | Expired |
| US5065134A | Tire pressure sensor for motor vehicles | Performing Operations; Transporting | 19 | Expired |
| US5790043A | Procedure for operating a locking system for lockable objects | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6278932A | Method for controlling an internal combustion engine | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US5737188A | Control module for motor vehicles | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4793277A | Detector of the inflation pressure of motor vehicle tires | Performing Operations; Transporting | 15 | Expired |
| US4768375A | Pressure sensor | Performing Operations; Transporting | 14 | Expired |
| US5583479A | Method of operating a motor vehicle alarm system having a central control unit | Performing Operations; Transporting | 14 | Expired |
| US4761996A | Device for transmitting measuring signals, for example, for the tire pressure, to twin wheels of motor vehicles | Performing Operations; Transporting | 10 | Expired |
| US5643116A | Device for determining belt rotational speed of continuously variable transmission | Physics | 9 | Expired |
| US4951502A | Pressure probe | Physics | 9 | Expired |
| US4790179A | Detector of inflation pressure of tires of a vehicle | Performing Operations; Transporting | 6 | Expired |
| US5375452A | Method for determination of wheel speed | Performing Operations; Transporting | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.