Inventor · disambiguated record
Frank H. Walker
Also filed as: WALKER FRANK H
19 granted patents·2 pending applications·484 citations·filing 1977–2009
96Inventor score
Top patents by PatentIndex Score
21 records- 0195US5971092AVehicle drive system featuring split engine and accessory back driveWALKER FRANK H·Filed 1996·Granted Oct 26, 1999·80 cites·18 claims
- 0291US6537047B2Reversible variable displacement hydraulic pump and motorFiled 2001·Granted Mar 25, 2003·40 cites·5 claims
- 0390US4414805AHybrid gas turbine engine and flywheel propulsion systemGEN MOTORS CORP·Filed 1981·Granted Nov 15, 1983·52 cites·5 claims
- 0489US5263401AHydraulic regenerative braking and four wheel drive systemWALKER FRANK H·Filed 1992·Granted Nov 23, 1993·42 cites·16 claims
- 0585US4113075ACentrifugal lock-up clutch and torque converterGEN MOTORS CORP·Filed 1977·Granted Sep 12, 1978·33 cites·2 claims
- 0683US4896749AEmergency vehicle braking system and method for using sameWALKER FRANK H·Filed 1988·Granted Jan 30, 1990·22 cites·17 claims
- 0781US5101925AHydraulic wheel motor and pumpWALKER FRANK H·Filed 1991·Granted Apr 7, 1992·53 cites·5 claims
- 0879US4441520AHydraulic fluid reservoir systemGEN MOTORS CORP·Filed 1982·Granted Apr 10, 1984·25 cites·3 claims
- 0976US7562944B2Hydraulic regenerative braking system for a vehicleWALKER FRANK H·Filed 2003·Granted Jul 21, 2009·23 cites·19 claims
- 1071US5323688AHydraulic regenerative braking and four wheel drive systemWALKER FRANK H·Filed 1993·Granted Jun 28, 1994·35 cites·17 claims
- 1170US8176838B2Hydraulic machine arrangementWALKER FRANK H·Filed 2008·Granted May 15, 2012·3 cites·21 claims
- 1266US8162621B2Hydraulic machine arrangementWALKER FRANK H·Filed 2009·Granted Apr 24, 2012·4 cites·27 claims
- 1365US4883141AHydraulic wheel motor and pumpWALKER FRANK H·Filed 1988·Granted Nov 28, 1989·22 cites·6 claims
- 1460US4423028AControl of houseflies by fumigant activitySTAUFFER CHEMICAL CO·Filed 1981·Granted Dec 27, 1983·6 cites·4 claims
- 1559US4182625A3-Halo-5-(lower alkoxy) phenoxy alkyl amidesSTAUFFER CHEMICAL CO·Filed 1978·Granted Jan 8, 1980·4 cites·5 claims
- 1657US4301649ASingle rotor engine with turbine exhausting to subatmospheric pressureGEN MOTORS CORP·Filed 1979·Granted Nov 24, 1981·17 cites·4 claims
- 1756US8132868B2Hydraulic regenerative braking system for a vehicleWALKER FRANK H·Filed 2005·Granted Mar 13, 2012·3 cites·25 claims
- 1850US5000282AHydraulic wheel motor and pumpWALKER FRANK H·Filed 1989·Granted Mar 19, 1991·13 cites·15 claims
- 1949US2009236906A1Hydraulic Regenerative Braking System For A VehicleWALKER FRANK H·Filed 2009·Application pending·0 cites
- 2042US2008210500A1Hydraulic Regenerative Braking System For a VehicleWALKER FRANK H·Filed 2006·Application pending·0 cites
- 2138US6138635AModular engine having crankshaft segments connected by a spring to provide even firingFiled 1999·Granted Oct 31, 2000·7 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →