Inventor · disambiguated record
John D. Crofts
Also filed as: CROFTS JOHN D
22 granted patents·1 pending application·782 citations·filing 1989–2019
96Inventor score
Top patents by PatentIndex Score
23 records- 0197US6253736B1Fuel injector nozzle assembly with feedback controlCUMMINS ENGINE CO INC·Filed 1999·Granted Jul 3, 2001·120 cites·22 claims
- 0295US6293254B1Fuel injector with floating sleeve control chamberCUMMINS ENGINE CO INC·Filed 2000·Granted Sep 25, 2001·60 cites·21 claims
- 0394US6912998B1Piezoelectric fuel injection system with rate shape control and method of controlling sameCUMMINS INC·Filed 2004·Granted Jul 5, 2005·60 cites·35 claims
- 0494US5979803AFuel injector with pressure balanced needle valveCUMMINS ENGINE CO INC·Filed 1997·Granted Nov 9, 1999·80 cites·10 claims
- 0594US5819704ANeedle controlled fuel system with cyclic pressure generationCUMMINS ENGINE CO INC·Filed 1997·Granted Oct 13, 1998·79 cites·13 claims
- 0693US5676114ANeedle controlled fuel system with cyclic pressure generationCUMMINS ENGINE CO INC·Filed 1996·Granted Oct 14, 1997·71 cites·65 claims
- 0791US10301996B2System and method for varying reductant delivery pressure to aftertreatment systemsCUMMINS EMISSION SOLUTIONS INC·Filed 2015·Granted May 28, 2019·5 cites·18 claims
- 0891US6313568B1Piezoelectric actuator and valve assembly with thermal expansion compensationCUMMINS INC·Filed 1999·Granted Nov 6, 2001·67 cites·17 claims
- 0990US6837221B2Fuel injector with feedback controlCUMMINS INC·Filed 2002·Granted Jan 4, 2005·52 cites·17 claims
- 1088US6978770B2Piezoelectric fuel injection system with rate shape control and method of controlling sameCUMMINS INC·Filed 2004·Granted Dec 27, 2005·28 cites·44 claims
- 1181US6595436B2Proportional needle control injectorCUMMINS ENGINE CO INC·Filed 2001·Granted Jul 22, 2003·21 cites·50 claims
- 1280US5884848AFuel injector with piezoelectric and hydraulically actuated needle valveCUMMINS ENGINE CO INC·Filed 1997·Granted Mar 23, 1999·38 cites·22 claims
- 1377US5417403ACaptured ring and threaded armature solenoid valveCUMMINS ENGINE CO INC·Filed 1994·Granted May 23, 1995·32 cites·17 claims
- 1470US9567960B2Fuel pump tappet assemblyCUMMINS INC·Filed 2014·Granted Feb 14, 2017·2 cites·19 claims
- 1568US11143077B2System and method for varying reductant delivery pressure to aftertreatment systemsCUMMINS EMISSION SOLUTIONS INC·Filed 2019·Granted Oct 12, 2021·0 cites·21 claims
- 1666US9151289B2Fuel pumpCROFTS JOHN D·Filed 2008·Granted Oct 6, 2015·3 cites·7 claims
- 1764US5673853AElectromagnetic fuel injector control valveCUMMINS ENGINE CO INC·Filed 1995·Granted Oct 7, 1997·24 cites·25 claims
- 1863US9353665B2Ammonia generation system for an SCR systemCUMMINS EMISSION SOLUTIONS INC·Filed 2014·Granted May 31, 2016·2 cites·27 claims
- 1962US6971172B2Piezoelectric control valve adjustment methodCUMMINS INC·Filed 2003·Granted Dec 6, 2005·9 cites·15 claims
- 2055US2016138586A1Fuel pumpCUMMINS INC·Filed 2015·Application pending·0 cites
- 2151US5467963ATwo-piece collet adjusting nut for a fuel injector solenoid valveCUMMINS ENGINE CO INC·Filed 1994·Granted Nov 21, 1995·16 cites·12 claims
- 2242US5979789AFuel injector with internal component load protectionCUMMINS ENGINE CO INC·Filed 1997·Granted Nov 9, 1999·10 cites·24 claims
- 2333US4947814ARetractable throttle stopCUMMINS ENGINE CO INC·Filed 1989·Granted Aug 14, 1990·3 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →