Jens Schafer
75Patents
10h-index
57Co-inventors
81Inventor score
Filing activity: Mar 31, 1998 → Dec 22, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6981478B2 | Electrically driven camshaft adjuster | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6313726A | Electromagnet, particularly a proportional magnet for operating a hydraulic valve | Electricity | 22 | Expired |
| US5860397A | Device for varying valve timing of gas exchange valves of internal combustion engine | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US6799746B2 | Electromagnet, in particular a proportional magnet for operating a hydraulic valve | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US7308876B2 | Electrically driven camshaft adjuster | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US6481401B1 | Device for independent hydraulic actuation of the phase and axial position of a camshaft | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6367434B1 | Solenoid valve, particularly a proportional hydraulic valve | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7506623B2 | Camshaft adjustment device for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 12 | Active |
| US6079382A | Locking device for a device for varying valve timing of gas exchange valves of an internal combustion engine | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US7032552B2 | Camshaft adjuster with an electrical drive | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5865150A | Device for varying the valve timing of gas exchange valves of an internal combustion engine | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6805080B2 | DEVICE FOR CHANGING THE CONTROL TIMES OF GAS EXCHANGE VALVES OF INTERNAL COMBUSTION ENGINE, PARTICULARLY ROTARY PISTON ADJUSTMENT DEVICE FOR ROTATION ANGLE ADJUSTMENT OF A CAMSHAFT RELATIVE TO A CRANKSHAFT | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US7541803B2 | Device and method for determining the angle of rotation between a camshaft and a crankshaft in an internal combustion engine | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US6283075A | Locking unit for a device for modifying the timing of charge change valves in internal combustion engines, especially for a vane-cell control device | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6170447A | Inner seal for a camshaft adjusting device in an internal combustion engine, specially a blade cell adjusting device | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6651600B1 | Rotary piston adjuster | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6055950A | Arrangement for controlling a device for changing the valve timing of an internal combustion engine | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6669567B1 | Device for hydraulically adjusting the angle of rotation of a shaft relative to a driving wheel | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6363897B2 | Device for changing the control timing of the gas exchange valves of an internal combustion engine, in particular a hydraulic camshaft adjustment device of the rotary piston type | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6601554B1 | Device for varying the valve control times of an internal combustion engine, especially a camshaft adjusting device with a pivotal impeller wheel | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6637389B2 | Electrically driven device for angular adjustment of a shaft relative to its drive | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6289862A | Locking unit for a device for modifying the timing of charge change valves in internal combustion engines | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7059285B2 | Control structure for the adjusting motor of an electric camshaft adjuster | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8973544B2 | Construction of a hydraulic oil channel between a central valve and a volume accumulator of a camshaft adjuster | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US7597075B2 | Electrically driven camshaft adjuster | Mechanical Engineering; Lighting; Heating | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.