Inventor · disambiguated record
John M. Clarke
Also filed as: CLARKE JOHN · CLARKE JOHN M · CLARKE JOHN M C · CLARKE JOHN MICHAEL
55 granted patents·10 pending applications·1,955 citations·filing 1975–2018
99Inventor score
Top patents by PatentIndex Score
65 records- 0199US6324846B1Exhaust gas recirculation system for an internal combustion engineCATERPILLAR INC·Filed 2000·Granted Dec 4, 2001·122 cites·12 claims
- 0299US5117790AEngine operation using fully flexible valve and injection eventsCATERPILLAR INC·Filed 1991·Granted Jun 2, 1992·221 cites·13 claims
- 0397US7116102B2SQUID detected NMR and MRI at ultralow fieldsUNIV CALIFORNIA·Filed 2006·Granted Oct 3, 2006·72 cites·17 claims
- 0497US6318310B1Internal combustion engineCATERPILLAR INC·Filed 2000·Granted Nov 20, 2001·93 cites·14 claims
- 0596US7466132B2Squid detected NMR and MRI at ultralow fieldsUNIV CALIFORNIA·Filed 2007·Granted Dec 16, 2008·31 cites·21 claims
- 0696US7218104B2Squid detected NMR and MRI at ultralow fieldsCLARKE JOHN·Filed 2006·Granted May 15, 2007·67 cites·20 claims
- 0796US6885192B2SQUID detected NMR and MRI at ultralow fieldsUNIV CALIFORNIA·Filed 2003·Granted Apr 26, 2005·109 cites·45 claims
- 0895US5623894ADual compression and dual expansion engineCATERPILLAR INC·Filed 1995·Granted Apr 29, 1997·93 cites·112 claims
- 0994US7053610B2Squid detected NMR and MRI at ultralow fieldsTH UNIVERSITY OF CALIFORNIA·Filed 2004·Granted May 30, 2006·94 cites·20 claims
- 1093US5216987AMethod and apparatus for optimizing breathing utilizing unit valve actuationCATERPILLAR INC·Filed 1992·Granted Jun 8, 1993·60 cites·13 claims
- 1190US5271229AMethod and apparatus to improve a turbocharged engine transient responseCATERPILLAR INC·Filed 1992·Granted Dec 21, 1993·53 cites·12 claims
- 1288US5542382ADual compression and dual expansion internal combustion engine and method thereforCATERPILLAR INC·Filed 1991·Granted Aug 6, 1996·47 cites·12 claims
- 1387US4044629AReciprocating piston machineCLARKE JOHN MICHAEL·Filed 1975·Granted Aug 30, 1977·40 cites·9 claims
- 1486US7187169B2NMR and MRI apparatus and methodUNIV CALIFORNIA·Filed 2004·Granted Mar 6, 2007·57 cites·25 claims
- 1586US6135069AMethod for operation of a free piston engineCATERPILLAR INC·Filed 1998·Granted Oct 24, 2000·48 cites·4 claims
- 1683US6159444ANMR/MRI with hyperpolarized gas and high Tc SQUIDUNIV CALIFORNIA·Filed 1999·Granted Dec 12, 2000·58 cites·15 claims
- 1783US4447235AThoracentesis deviceCLARKE JOHN M·Filed 1981·Granted May 8, 1984·165 cites·11 claims
- 1881US5226401AMethod and apparatus for exhaust gas recirculation via reverse flow motoringCATERPILLAR INC·Filed 1992·Granted Jul 13, 1993·35 cites·14 claims
- 1979US5522358AFluid controlling system for an engineCATERPILLAR INC·Filed 1995·Granted Jun 4, 1996·32 cites·7 claims
- 2078US5699758AMethod and apparatus for multiple cycle internal combustion engine operationCATERPILLAR INC·Filed 1996·Granted Dec 23, 1997·32 cites·25 claims
- 2176US5540191AHigh efficiency thermal regenerated internal combustion engineCATERPILLAR INC·Filed 1994·Granted Jul 30, 1996·29 cites·10 claims
- 2276US5448979ADual compression and dual expansion internal combustion engine and method thereforCATERPILLAR INC·Filed 1994·Granted Sep 12, 1995·25 cites·19 claims
- 2375US6023161ALow-noise SQUIDUNIV CALIFORNIA·Filed 1998·Granted Feb 8, 2000·46 cites·34 claims
- 2472US5456219ADual compression and dual expansion internal combustion engine and method thereforCATERPILLAR INC·Filed 1994·Granted Oct 10, 1995·26 cites·102 claims
- 2572US5205152AEngine operation and testing using fully flexible valve and injection eventsCATERPILLAR INC·Filed 1992·Granted Apr 27, 1993·23 cites·6 claims
- 2671US4341070AHigh thermal efficiency power plant and operating method thereforCATERPILLAR TRACTOR CO·Filed 1980·Granted Jul 27, 1982·22 cites·4 claims
- 2770US9334844B2Reciprocating internal combustion engineMotiv Engines LLC·Filed 2013·Granted May 10, 2016·3 cites·21 claims
- 2870US8381691B2Fuel injection systemMotiv Engines LLC·Filed 2009·Granted Feb 26, 2013·5 cites·27 claims
- 2970US6154026AAsymmetric planar gradiometer for rejection of uniform ambient magnetic noiseUNIV CALIFORNIA·Filed 1998·Granted Nov 28, 2000·32 cites·13 claims
- 3068US5445248AExhaust brakeJENARA ENTERPRISES LTD·Filed 1994·Granted Aug 29, 1995·33 cites·14 claims
- 3167US6546909B1Piston for a thermal regenerated engineCATERPILLAR INC·Filed 2001·Granted Apr 15, 2003·10 cites·18 claims
- 3265US9951679B2Reciprocating internal combustion engineMotiv Engines LLC·Filed 2016·Granted Apr 24, 2018·1 cites·23 claims
- 3365US8813694B2Piston cooling systemCLARKE JOHN M·Filed 2012·Granted Aug 26, 2014·1 cites·27 claims
- 3464US8671922B2Combustion chamber intake and exhaust shutterCLARKE JOHN M·Filed 2012·Granted Mar 18, 2014·1 cites·25 claims
- 3563US8763593B2Intake and exhaust chambersCLARKE JOHN M·Filed 2012·Granted Jul 1, 2014·1 cites·30 claims
- 3663US6070408AHydraulic apparatus with improved accumulator for reduced pressure pulsation and method of operating the sameCATERPILLAR INC·Filed 1997·Granted Jun 6, 2000·16 cites·6 claims
- 3760US4029444ASealing bolt seat for rotary piston machineCATERPILLAR TRACTOR CO·Filed 1975·Granted Jun 14, 1977·8 cites·3 claims
- 3857US5566549AIn-line engines having residual cycles and method of operationCATERPILLAR INC·Filed 1995·Granted Oct 22, 1996·18 cites·8 claims
- 3955US5277222APressure actuatable valve assemblyCATERPILLAR INC·Filed 1993·Granted Jan 11, 1994·16 cites·7 claims
- 4055US4318675ARotary expansible chamber apparatus with stress reliefCATERPILLAR TRACTOR CO·Filed 1979·Granted Mar 9, 1982·7 cites·4 claims
- 4154US5647307AValving for dual compression/expansion engine and method of assembling the sameCATERPILLAR INC·Filed 1996·Granted Jul 15, 1997·13 cites·33 claims
- 4253US6601549B2Two stroke homogenous charge compression ignition engine with pulsed air supplierCATERPILLAR INC·Filed 2001·Granted Aug 5, 2003·6 cites·17 claims
- 4352US6668788B2Homogenous charge compression ignition engine having a cylinder including a high compression spaceCATERPILLAR INC·Filed 2001·Granted Dec 30, 2003·11 cites·7 claims
- 4452US5291035AMicroelectronic superconducting crossover and coilUNIV CALIFORNIA·Filed 1993·Granted Mar 1, 1994·13 cites·13 claims
- 4552US5256636AMicroelectronic superconducting device with multi-layer contactUNIV CALIFORNIA·Filed 1990·Granted Oct 26, 1993·16 cites·4 claims
- 4651US5497743AInjector for separate control of flow and momentumCATERPILLAR INC·Filed 1994·Granted Mar 12, 1996·12 cites·30 claims
- 4750US7210640B2Fuel injector spray alteration through a moveable tip sleeveCATERPILLAR INC·Filed 2001·Granted May 1, 2007·5 cites·17 claims
- 4850US2018315011A1Limited Spatial Digital Directory with Physical Navigation for Optimizing Smart CartsCLARKE JOHN·Filed 2018·Application pending·0 cites
- 4949US4392395AInfinitely variable transmissionCATERPILLAR TRACTOR CO·Filed 1981·Granted Jul 12, 1983·10 cites·18 claims
- 5045US2007044739A1Machine with a reciprocating pistonCATERPILLAR INC·Filed 2005·Application pending·0 cites
Showing the top 50 of 65 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →