Inventor · Roßtal, DE

Gerhard Hettich

30Patents
16h-index
47Co-inventors
77Inventor score

Filing activity: May 11, 1982 → Apr 20, 2000

Most-cited inventions

PatentTitleAreaCited byStatus
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.