Inventor · disambiguated record
David P. Smith
Also filed as: SMITH DAVID · SMITH DAVID P · SMITH DAVID P H · SMITH DAVID PAUL
66 granted patents·9 pending applications·1,009 citations·filing 1981–2025
99Inventor score
Files withCATERPILLAR INC39MINNESOTA MINING & MFG8PRINCE IND INC6IMATION CORP4VIRTEK VISION INT INC3
Top patents by PatentIndex Score
75 records- 0198US6748738B2Hydraulic regeneration systemCATERPILLAR INC·Filed 2002·Granted Jun 15, 2004·94 cites·39 claims
- 0297US7444809B2Hydraulic regeneration systemCATERPILLAR INC·Filed 2006·Granted Nov 4, 2008·54 cites·27 claims
- 0397US5868059AElectrohydraulic valve arrangementCATERPILLAR INC·Filed 1997·Granted Feb 9, 1999·85 cites·22 claims
- 0495US6681568B2Fluid system for two hydraulic circuits having a common source of pressurized fluidCATERPILLAR INC·Filed 2002·Granted Jan 27, 2004·47 cites·11 claims
- 0592US6279482B1Countermeasure apparatus for deploying interceptor elements from a spin stabilized rocketTRW INC·Filed 1997·Granted Aug 28, 2001·75 cites·16 claims
- 0688US10738551B1Real time flow analysis methods and continuous mass balance and wellbore pressure calculations from real-time density and flow measurementsWELLWORC INC·Filed 2018·Granted Aug 11, 2020·7 cites·37 claims
- 0788US10416195B2Current sensor and a method of manufacturing a current sensorANALOG DEVICES GLOBAL·Filed 2016·Granted Sep 17, 2019·4 cites·20 claims
- 0887US6684636B2Electro-hydraulic pump control systemCATERPILLAR INC·Filed 2001·Granted Feb 3, 2004·30 cites·13 claims
- 0982US11242744B1Real time flow analysis methods and continuous mass balance and wellbore pressure calculations from real-time density and flow measurementsWELLWORC INC·Filed 2020·Granted Feb 8, 2022·2 cites·1 claims
- 1081US9387788B1Combination trailerFIRST CLASS SERVICES INC·Filed 2013·Granted Jul 12, 2016·11 cites·26 claims
- 1180US6769252B2Fluid system having variable pressure reliefCATERPILLAR INC·Filed 2001·Granted Aug 3, 2004·18 cites·22 claims
- 1280US5682955ABlade control system for an earthmoving bladeCATERPILLAR INC·Filed 1996·Granted Nov 4, 1997·32 cites·5 claims
- 1379US7258058B2Metering valve with integral relief and makeup functionCATERPILLAR MITSUBISHI LTD·Filed 2005·Granted Aug 21, 2007·9 cites·24 claims
- 1479US6179570B1Variable pump control for hydraulic fan driveCATERPILLAR INC·Filed 1999·Granted Jan 30, 2001·38 cites·13 claims
- 1579US4466564ABelt for belt-driven recording tape packMINNESOTA MINING & MFG·Filed 1981·Granted Aug 21, 1984·21 cites·7 claims
- 1678US7658065B2Hydraulic system having in-sump energy recovery deviceCATERPILLAR INC·Filed 2006·Granted Feb 9, 2010·8 cites·17 claims
- 1778US6394431B1High force feel bumper with low final loadCATERPILLAR INC·Filed 2001·Granted May 28, 2002·18 cites·22 claims
- 1878US5435131AAdaptive overspeed control for a hydrostatic transmissionCATERPILLAR INC·Filed 1994·Granted Jul 25, 1995·30 cites·17 claims
- 1974US7240604B2Electro-hydraulic metering valve with integral flow controlCATERPILLAR MITSUBISHI LTD·Filed 2005·Granted Jul 10, 2007·7 cites·22 claims
- 2074US5447029AHydrostatic transmission control systemCATERPILLAR INC·Filed 1994·Granted Sep 5, 1995·26 cites·12 claims
- 2173US7723979B2Integrated energy metering systemANALOG DEVICES INC·Filed 2007·Granted May 25, 2010·9 cites·30 claims
- 2273US6935114B2System and method for starting an engineCATERPILLAR INC·Filed 2002·Granted Aug 30, 2005·16 cites·22 claims
- 2373US5265331AMethod of manufacturing a piston for an axial piston fluid translating deviceCATERPILLAR INC·Filed 1992·Granted Nov 30, 1993·37 cites·1 claims
- 2473US2025264418A1Method and system for inspecting a surface with artificial intelligence assistVIRTEK VISION INT INC·Filed 2025·Application pending·0 cites
- 2571US9836077B2Operator controlled electrical output signal device with variable feel and hold feedback and automated calibration and learnable performance optimizationPRINCE IND INC·Filed 2016·Granted Dec 5, 2017·2 cites·9 claims
- 2671US6694859B2Variable pressure relief valveCATERPILLAR INC·Filed 2002·Granted Feb 24, 2004·13 cites·21 claims
- 2770US12320759B2Method and system for inspecting a surface with artifical intelligence assistVIRTEK VISION INT INC·Filed 2022·Granted Jun 3, 2025·0 cites·21 claims
- 2870US6564830B1Method and apparatus for managing fluid pressure using an accumulatorCATERPILLAR INC·Filed 2001·Granted May 20, 2003·13 cites·12 claims
- 2967US6848475B2Electro-hydraulic valve and systemCATERPILLAR INC·Filed 2002·Granted Feb 1, 2005·11 cites·26 claims
- 3065US5358193ATape guide for a data cartridgeMINNESOTA MINING & MFG·Filed 1993·Granted Oct 25, 1994·16 cites·18 claims
- 3163US7497156B2Fluid motorCATERPILLAR INC·Filed 2006·Granted Mar 3, 2009·3 cites·24 claims
- 3263US7293579B2Poppet valve arrangementsCATERPILLAR INC·Filed 2004·Granted Nov 13, 2007·11 cites·9 claims
- 3363US6699311B2Hydraulic quick drop circuitCATERPILLAR INC·Filed 2001·Granted Mar 2, 2004·10 cites·20 claims
- 3463US6631653B2System for definable single lever control shift pattern jointCATERPILLAR INC·Filed 2000·Granted Oct 14, 2003·11 cites·17 claims
- 3563US5809841AVariable position detent mechanism for a control leverCATERPILLAR INC·Filed 1996·Granted Sep 22, 1998·21 cites·5 claims
- 3662US6651794B2Hydro-mechanical combinerCATERPILLAR INC·Filed 2001·Granted Nov 25, 2003·6 cites·15 claims
- 3761US5875631AControl system for a hydrostatic transmissionCATERPILLAR INC·Filed 1996·Granted Mar 2, 1999·25 cites·4 claims
- 3860US10648575B2Electro-hydraulic pressure reducing and relieving valve with flow force control for large flow capacityPRINCE IND INC·Filed 2013·Granted May 12, 2020·1 cites·7 claims
- 3960US4581189AMethod of making a belt for belt-driven recording tape packMINNESOTA MINING & MFG·Filed 1984·Granted Apr 8, 1986·10 cites·7 claims
- 4059US7757755B2System and method for measuring an orientation of a downhole toolSCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Granted Jul 20, 2010·5 cites·21 claims
- 4159US7631738B2Fluidly actuated spragCATERPILLAR INC·Filed 2006·Granted Dec 15, 2009·1 cites·20 claims
- 4259US5746056AOverspeed control for a hydrostatic transmissionCATERPILLAR INC·Filed 1996·Granted May 5, 1998·16 cites·6 claims
- 4358US12322085B2Method and system for inspecting a surface with artificial intelligence assistVIRTEK VISION INT INC·Filed 2023·Granted Jun 3, 2025·0 cites·15 claims
- 4455US5362009ADrive belt corner guide roller with structured inner surface for a data cartridgeMINNESOTA MINING & MFG·Filed 1993·Granted Nov 8, 1994·10 cites·14 claims
- 4554US6098481AHigh force variable position detent mechanismCATERPILLAR INC·Filed 1998·Granted Aug 8, 2000·16 cites·8 claims
- 4653US5875682AOperator controlled electrical output signal deviceCATERPILLAR INC·Filed 1997·Granted Mar 2, 1999·14 cites·7 claims
- 4753US5486857AThermal imaging systemMINNESOTA MINING & MFG·Filed 1993·Granted Jan 23, 1996·9 cites·15 claims
- 4852US6572344B1Compact pump or motor with internal swash plateCATERPILLAR INC·Filed 2001·Granted Jun 3, 2003·5 cites·26 claims
- 4952US2008238246A1Electromechanical actuatorCATERPILLAR INC·Filed 2007·Application pending·0 cites
- 5051US10942540B2Operator controlled electrical output signal device with variable feel and hold feedback and automated calibration and learnable performance optimizationPRINCE IND INC·Filed 2017·Granted Mar 9, 2021·0 cites·12 claims
Showing the top 50 of 75 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →