Inventor · disambiguated record
Karl-Heinz Liebert
Also filed as: DEPPENBROCK JOSEF · LIEBERT KARL-HEINZ
20 granted patents·162 citations·filing 1975–1984
94Inventor score
Files withZAHNRADFABRIK FRIEDRICHSHAFEN20
Top patents by PatentIndex Score
20 records- 0187US4174018AArrangement for control of two hydraulic pressure systems, including booster steering controlZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1978·Granted Nov 13, 1979·37 cites·2 claims
- 0275US4553389AHydrostatic auxiliary steering apparatusZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1982·Granted Nov 19, 1985·27 cites·10 claims
- 0362US4023363AAuxiliary power steering systems for heavy duty vehiclesZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1976·Granted May 17, 1977·15 cites·10 claims
- 0449US4184332AHydrostatic two-circuit steering arrangementZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1978·Granted Jan 22, 1980·9 cites·4 claims
- 0548US4553390AHydrostatic steering arrangementZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1984·Granted Nov 19, 1985·10 cites·17 claims
- 0645US4174612APressure agent control arrangements, especially for hydraulic steering arrangements for motor vehiclesZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1978·Granted Nov 20, 1979·8 cites·5 claims
- 0744US4618017AHydraulic auxiliary power steering for motor vehiclesZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1983·Granted Oct 21, 1986·12 cites·6 claims
- 0844US4258902ASteering valve with annular sealing element for radial annular gapZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1979·Granted Mar 31, 1981·7 cites·10 claims
- 0940US4354350AHydrostatic auxiliary power steeringZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1980·Granted Oct 19, 1982·7 cites·11 claims
- 1039US4258752AControl valve with two rotary valve elements supported in a housing and acted upon axially by pressureZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1979·Granted Mar 31, 1981·5 cites·6 claims
- 1137US4290738ASteering valve with spring torsion rodZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1979·Granted Sep 22, 1981·4 cites·4 claims
- 1235US3989120APower steering with variable volume servo controlZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1975·Granted Nov 2, 1976·4 cites·15 claims
- 1333US4237773APressure medium controller for motor vehicle steering systemsZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1978·Granted Dec 9, 1980·3 cites·9 claims
- 1432US4495769ABooster power steeringZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1981·Granted Jan 29, 1985·3 cites·2 claims
- 1531US4355505ARotatable controller valveZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1980·Granted Oct 26, 1982·3 cites·8 claims
- 1631US4221159APressure medium control device for hydrostatic steering systems of motor vehiclesZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1978·Granted Sep 9, 1980·2 cites·5 claims
- 1729US4466243AHydrostatic power steering system with curved valve return springsZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1981·Granted Aug 21, 1984·1 cites·9 claims
- 1829US4395877AHydrostatic steering system for motor vehiclesZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1980·Granted Aug 2, 1983·0 cites·3 claims
- 1929US4295805AHydraulic rotary toothed piston engine with flow through the toothed gapsZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1979·Granted Oct 20, 1981·2 cites·4 claims
- 2026US4344283AHydrostatic auxiliary power steeringZAHNRADFABRIK FRIEDRICHSHAFEN·Filed 1980·Granted Aug 17, 1982·3 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when Karl-Heinz Liebert files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →