Patent Explorer
Browse, filter, and analyze 17 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| GB2064702A | Axle drive and parking brake mechanism | ZF Friedrichshafen AG | Expired / Lapsed | 1980-10-30 | — | 2000-10-30 | 0.0 yrs | 9 | |
| DE1138652B | Hydraulic power steering for motor vehicles | ZF Friedrichshafen AG | Expired / Lapsed | 1958-12-08 | — | 1978-12-08 | 0.0 yrs | 0 | |
| GB2028240A | Damming return flow in a rotary power-assisted steering valve | ZF Friedrichshafen AG | Expired / Lapsed | 1979-07-13 | — | 1999-07-13 | 0.0 yrs | 8 | |
| DE1139399B | Hydraulic power steering for motor vehicles | ZF Friedrichshafen AG | Expired / Lapsed | 1958-12-08 | — | 1978-12-08 | 0.0 yrs | 0 | |
| US4913249A | Auxiliary power steering mechanism, especially for motor vehicles | ZF Friedrichshafen AG | Expired / Lapsed | 1987-07-14 | 1990-04-03 | 2007-07-14 | 0.0 yrs | 9 | |
| US4421010A | Steering gear for motor vehicles | ZF Friedrichshafen AG | Expired / Lapsed | 1981-07-15 | 1983-12-20 | 2001-07-15 | 0.0 yrs | 20 | |
| US4373598A | Auxiliary steering for motor vehicles | ZF Friedrichshafen AG | Expired / Lapsed | 1980-05-07 | 1983-02-15 | 2000-05-07 | 0.0 yrs | 22 | |
| US4335749A | Rotary slide steering valve for auxiliary power steerings of motor vehicles | ZF Friedrichshafen AG | Expired / Lapsed | 1979-08-21 | 1982-06-22 | 1999-08-21 | 0.0 yrs | 16 | |
| US4200030A | Servo steering gear | ZF Friedrichshafen AG | Expired / Lapsed | 1978-08-29 | 1980-04-29 | 1998-08-29 | 0.0 yrs | 7 | |
| US4085817A | Power steering device | ZF Friedrichshafen AG | Expired / Lapsed | 1976-08-23 | 1978-04-25 | 1996-08-23 | 0.0 yrs | 8 | |
| US3878763A | Hydraulic steering control system | ZF Friedrichshafen AG | Expired / Lapsed | 1973-10-04 | 1975-04-22 | 1993-10-04 | 0.0 yrs | 19 | |
| US3732755A | Digital shift control for vehicular transmission | ZF Friedrichshafen AG | Expired / Lapsed | 1971-03-18 | 1973-05-15 | 1991-03-18 | 0.0 yrs | 8 | |
| US3602101A | Auxilliary power steering, especially for motor vehicles | ZF Friedrichshafen AG | Expired / Lapsed | 1969-12-22 | 1971-08-31 | 1989-12-22 | 0.0 yrs | 21 | |
| US3500854A | Valve device | ZF Friedrichshafen AG | Expired / Lapsed | 1967-03-27 | 1970-03-17 | 1987-03-27 | 0.0 yrs | 0 | |
| US3354744A | Shifting device for motor vehicle transmissions | ZF Friedrichshafen AG | Expired / Lapsed | 1965-07-28 | 1967-11-28 | 1985-07-28 | 0.0 yrs | 2 | |
| US3252380A | Auxiliary power steering arrangement, especially for motor vehicles | ZF Friedrichshafen AG | Expired / Lapsed | 1963-07-31 | 1966-05-24 | 1983-07-31 | 0.0 yrs | 2 | |
| US3242824A | Hydraulic power steering system | ZF Friedrichshafen AG | Expired / Lapsed | 1963-07-31 | 1966-03-29 | 1983-07-31 | 0.0 yrs | 2 |