Helmut Steffes
75Patents
14h-index
50Co-inventors
87Inventor score
Filing activity: May 16, 1979 → Nov 21, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5115186A | Travel sensor for determining the position of a member such as a brake pedal | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4929038A | Hydraulic unit | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5290098A | Hydraulic anti-locking brake unit | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4824182A | Anti-lock hydraulic brake system for automotive vehicles | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5383718A | Brake system with a device for controlling both brake slip and traction slip | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4404803A | Brake unit with a hydraulic boosting device | Performing Operations; Transporting | 19 | Expired |
| US6220675A | Hydraulic brake system with hydraulic servo brake | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4483144A | Control arrangement for a hydraulic brake system with an antiskid control device | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4687259A | Hydraulic brake system with slip control | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4900105A | Pressure fluid-activated brake system including an anti-locking traction slip control | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4964681A | Anti-lock hydraulic brake system | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6142583A | Anti-locking hydraulic motor vehicle brake system | Performing Operations; Transporting | 16 | Expired |
| US4530209A | Control arrangement for a vehicular brake system with hydraulic brake booster | Performing Operations; Transporting | 15 | Expired |
| US4489989A | Auxiliary power assisted master cylinder arrangement for a vehicle brake system | Performing Operations; Transporting | 14 | Expired |
| US5141295A | Brake power booster with diaphragm position sensing devices | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5215359A | Hydraulic anti-locking brake unit | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4341076A | Hydraulic brake booster | Performing Operations; Transporting | 13 | Expired |
| US5251971A | Anti-lock controlled brake system for automotive vehicles | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6454543B1 | Selectively operable multiple pump assembly | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4564244A | Pressure control device | Performing Operations; Transporting | 10 | Expired |
| US5681099A | Electrohydraulic pressure control device | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4838305A | Pressure differential valve | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4660898A | Hydraulic brake system with slip control | Performing Operations; Transporting | 9 | Expired |
| US4950027A | Brake pressure regulator | Performing Operations; Transporting | 8 | Expired |
| US4815793A | Hydraulic brake system for automotive vehicles | Performing Operations; Transporting | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.