Assignee
PARKER HANNIFIN CORP
US·1,357 granted patents·220 pending applications·32,015 citations·filing 1973–2025
Top patents by PatentIndex Score
1,577 records- 0198US7669414B2Hydraulic energy recovery system with dual-powered auxiliary hydraulicsPARKER HANNIFIN CORP·Filed 2007·Granted Mar 2, 2010·68 cites·18 claims
- 0298US7503173B2Control devices for swashplate type variable displacement piston pumpPARKER HANNIFIN CORP·Filed 2006·Granted Mar 17, 2009·36 cites·13 claims
- 0398US6554139B1Extension and locking assembly for dripless element, and container thereforePARKER HANNIFIN CORP·Filed 2000·Granted Apr 29, 2003·193 cites·15 claims
- 0498US5770065AFuel filter assembly with replacement elementPARKER HANNIFIN CORP·Filed 1996·Granted Jun 23, 1998·154 cites·55 claims
- 0598US5570580AMultiple passage cooling circuit method and device for gas turbine engine fuel nozzlePARKER HANNIFIN CORP·Filed 1994·Granted Nov 5, 1996·157 cites·20 claims
- 0698US5435884ASpray nozzle and method of manufacturing samePARKER HANNIFIN CORP·Filed 1993·Granted Jul 25, 1995·132 cites·9 claims
- 0798US3930656ASealed joint and gasket thereforPARKER HANNIFIN CORP·Filed 1974·Granted Jan 6, 1976·132 cites·15 claims
- 0897US6410137B1Intumescent, flame retardant pressure sensitive adhesive composition for EMI shielding applicationsPARKER HANNIFIN CORP·Filed 1999·Granted Jun 25, 2002·135 cites·27 claims
- 0997US6363958B1Flow control of process gas in semiconductor manufacturingPARKER HANNIFIN CORP·Filed 2000·Granted Apr 2, 2002·129 cites·17 claims
- 1097US6171491B1Fuel filter assembly with standpipe having valve elementPARKER HANNIFIN CORP·Filed 1999·Granted Jan 9, 2001·92 cites·35 claims
- 1197US5423178AMultiple passage cooling circuit method and device for gas turbine engine fuel nozzlePARKER HANNIFIN CORP·Filed 1992·Granted Jun 13, 1995·146 cites·36 claims
- 1296US11781573B2System, valve assembly, and methods for oscillation control of a hydraulic machinePARKER HANNIFIN CORP·Filed 2021·Granted Oct 10, 2023·5 cites·20 claims
- 1396US11486528B2Quick-coupling with automatic locking mechanismPARKER HANNIFIN CORP·Filed 2020·Granted Nov 1, 2022·14 cites·14 claims
- 1496US9223302B2Method and system for controlling electric actuatorsPARKER HANNIFIN CORP·Filed 2014·Granted Dec 29, 2015·23 cites·23 claims
- 1596US7494017B2Filter element with off-axis end capPARKER HANNIFIN CORP·Filed 2004·Granted Feb 24, 2009·97 cites·32 claims
- 1696US6857665B2Lockwireless anti-rotation fittingPARKER HANNIFIN CORP·Filed 2003·Granted Feb 22, 2005·78 cites·14 claims
- 1796US6622488B2Pure airblast nozzlePARKER HANNIFIN CORP·Filed 2001·Granted Sep 23, 2003·92 cites·16 claims
- 1896US6555000B2Fuel filter with bypass valvePARKER HANNIFIN CORP·Filed 2001·Granted Apr 29, 2003·106 cites·20 claims
- 1996US6450200B1Flow control of process gas in semiconductor manufacturingPARKER HANNIFIN CORP·Filed 2002·Granted Sep 17, 2002·96 cites·10 claims
- 2096US6422533B1High force solenoid valve and method of improved solenoid valve performancePARKER HANNIFIN CORP·Filed 2000·Granted Jul 23, 2002·67 cites·20 claims
- 2196US6328883B1Fuel filter assembly with priming pumpPARKER HANNIFIN CORP·Filed 2000·Granted Dec 11, 2001·81 cites·29 claims
- 2296US6286535B1Proportional pressure control valvePARKER HANNIFIN CORP·Filed 2000·Granted Sep 11, 2001·45 cites·30 claims
- 2396US6139738ACartridge filter with integrated threading having anti-rotation featurePARKER HANNIFIN CORP·Filed 1999·Granted Oct 31, 2000·171 cites·25 claims
- 2496US6113781AFuel filter with dual flowPARKER HANNIFIN CORP·Filed 1998·Granted Sep 5, 2000·139 cites·24 claims
- 2596US6054198AConformal thermal interface material for electronic componentsPARKER HANNIFIN CORP·Filed 1997·Granted Apr 25, 2000·230 cites·19 claims
- 2696US5858227AFuel filter assembly with in-line valvePARKER HANNIFIN CORP·Filed 1997·Granted Jan 12, 1999·144 cites·29 claims
- 2796US5740967ASpray nozzle and method of manufacturing samePARKER HANNIFIN CORP·Filed 1997·Granted Apr 21, 1998·88 cites·47 claims
- 2896US5458767AFuel filter assembly with dual filter media and by-pass devicePARKER HANNIFIN CORP·Filed 1994·Granted Oct 17, 1995·126 cites·35 claims
- 2996US4447233AMedication infusion pumpPARKER HANNIFIN CORP·Filed 1982·Granted May 8, 1984·993 cites·8 claims
- 3095US11815214B2Blind mate fluid coupling with misalignment compensationPARKER HANNIFIN CORP·Filed 2022·Granted Nov 14, 2023·12 cites·19 claims
- 3195US11427091B1Electric drive system for a mowerPARKER HANNIFIN CORP·Filed 2020·Granted Aug 30, 2022·4 cites·19 claims
- 3295US11305213B2Filter element with torsion lock and/or sliding piston, assembly and methodsPARKER HANNIFIN CORP·Filed 2019·Granted Apr 19, 2022·9 cites·28 claims
- 3395US10001454B2Single-use sensors in bioreactors, biotech purification and bioprocessingPARKER HANNIFIN CORP·Filed 2014·Granted Jun 19, 2018·19 cites·22 claims
- 3495US9914356B2Hydrostatic transmission with spool valve driven motorPARKER HANNIFIN CORP·Filed 2015·Granted Mar 13, 2018·15 cites·20 claims
- 3595US9670943B2Method for controlling pressure in a hydraulic actuatorPARKER HANNIFIN CORP·Filed 2014·Granted Jun 6, 2017·25 cites·28 claims
- 3695US7922150B2Solenoid valvePARKER HANNIFIN CORP·Filed 2010·Granted Apr 12, 2011·25 cites·18 claims
- 3795US7806166B1Insulated spray cooling system for extreme environmentsPARKER HANNIFIN CORP·Filed 2005·Granted Oct 5, 2010·57 cites·29 claims
- 3895US7147041B2Lightweight heat sinkPARKER HANNIFIN CORP·Filed 2005·Granted Dec 12, 2006·47 cites·35 claims
- 3995US7086537B2Extension and locking assembly for dripless element, and container thereforePARKER HANNIFIN CORP·Filed 2005·Granted Aug 8, 2006·27 cites·12 claims
- 4095US6764284B2Pump mount using sanitary flange clampPARKER HANNIFIN CORP·Filed 2002·Granted Jul 20, 2004·91 cites·16 claims
- 4195US6460859B1Resilient elastomer and metal retainer gasket for sealing between curved surfacesPARKER HANNIFIN CORP·Filed 2000·Granted Oct 8, 2002·76 cites·27 claims
- 4295US6290235B1Sealing system for a reciprocating shaftPARKER HANNIFIN CORP·Filed 1998·Granted Sep 18, 2001·120 cites·24 claims
- 4395US6235194B1Recharge and filter assembly with replaceable cartridgePARKER HANNIFIN CORP·Filed 2000·Granted May 22, 2001·195 cites·31 claims
- 4495US5761907AThermal gradient dispersing heatshield assemblyPARKER HANNIFIN CORP·Filed 1996·Granted Jun 9, 1998·118 cites·12 claims
- 4595US4702657ASelf centering sealPARKER HANNIFIN CORP·Filed 1986·Granted Oct 27, 1987·74 cites·6 claims
- 4695US4619764ARepelling-action filter unit and assemblyPARKER HANNIFIN CORP·Filed 1984·Granted Oct 28, 1986·95 cites·28 claims
- 4795US4026565ASealed static joint and gasket thereforPARKER HANNIFIN CORP·Filed 1975·Granted May 31, 1977·95 cites·8 claims
- 4895US4009734ACoiled tubingPARKER HANNIFIN CORP·Filed 1976·Granted Mar 1, 1977·109 cites·8 claims
- 4995US3980233AAir-atomizing fuel nozzlePARKER HANNIFIN CORP·Filed 1975·Granted Sep 14, 1976·245 cites·19 claims
- 5094US12247685B2Self-centering blind mate fluid couplingPARKER HANNIFIN CORP·Filed 2023·Granted Mar 11, 2025·3 cites·20 claims
Showing the top 50 of 1,577 patent records by PatentIndex Score.
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