Frieder Keller
17Patents
9h-index
33Co-inventors
68Inventor score
Filing activity: Jan 31, 1992 → Jan 16, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5351776A | Electronic system for a motor vehicle | Emerging Cross-Sectional Technologies | 96 | Expired |
| US5954407A | Process and device for an open-loop control and a closed-loop control of a brake system of a vehicle | Performing Operations; Transporting | 46 | Expired |
| US6012556A | Electric motor-driven braking apparatus | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US6704631B2 | Method and device for determining a corrected offset value | Performing Operations; Transporting | 37 | Expired |
| US5752748A | Electronic brake system with back-up control during central module failure | Performing Operations; Transporting | 34 | Expired |
| US6536561B1 | Electromagnetic wheel brake device | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US6926126B2 | Disc brake | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6810311B2 | Method and device for determining offset values by a histogram method | Performing Operations; Transporting | 12 | Expired |
| US5322146A | Friction brake for vehicles | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5222110A | Electronic counter for counting periodic clock signal generated at preset clock frequency | Physics | 9 | Expired |
| US5388669A | Brake actuator with electromagnet, cam, and hydraulic piston components | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6845853B2 | Wheel brake device | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US7311180B2 | Disk brake | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US7398866B2 | Self-boosting friction brake, device for measuring the coefficient of friction, and method for regulating a braking force | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US6622833B2 | Drum brake system | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US6983828B2 | Disc brake that is actuated by means of a band brake device | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US6799093B2 | Method and device for determining offset values by a regression method | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.