Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DH

David E. Hackett — 28 Patents

Caterpillar: 25 patents #132 of 8,398Top 2%
Toyota: 2 patents #11,016 of 26,838Top 45%
Nashville, IL: #5 of 324 inventorsTop 2%
Illinois: #2,273 of 84,256 inventorsTop 3%
Overall (All Time): #134,628 of 4,157,543Top 4%
28 Patents All Time
David E. Hackett has been granted 28 US patents while listed as an inventor at Caterpillar. The first was granted in 1985 and the most recent in January 2019. David E. Hackett ranks #134,628 of 4,157,543 US inventors in our database (top 3.2%). Patent records list David E. Hackett in Nashville, IL, US.

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10184436 Fluid injector supply system and method for operating same Scott F. Shafer, Martin Lehman, Lifeng Wang, Taylor Tang, Andrew O. Marrack +1 more 2019-01-22 $26,065,000
10036314 Fuel system flush circuitry and method for operating the same Martin Lehman, Scott F. Shafer 2018-07-31 $17,827,000
10036401 Recirculating pump inlet Scott F. Shafer 2018-07-31 $17,827,000
9957940 Fluid conditioning module Scott F. Shafer, Steven Y. Tian, Martin Lehman 2018-05-01 $28,576,000
9447740 Engine system having hydraulically actuated gas injector Aaron Michael Brown, Lifeng Wang, Scott F. Shafer, Alan R. Stockner, Martin Lehman 2016-09-20 $24,048,000
9303604 Asymmetrical orifice for bypass control Scott F. Shafer, Martin Lehman, Alan W. Wells, Lifeng Wang 2016-04-05 $15,094,000
9291133 Shaft arrangement for an axial piston pump assembly Michael E. Pickell, Bryan E. Nelson, Satyasai C. Avasarala 2016-03-22 $21,674,000
8991360 Coaxial quill assembly retainer and common rail fuel system using same 2015-03-31 $21,172,000
8833344 Dual fuel injector feed using differential length quills Mark F. Sommars 2014-09-16 $14,314,000
8726884 Quill assembly for a dual fuel common rail fuel system 2014-05-20 $21,172,000
6647770 Apparatus and method for testing internal combustion engine valves Mysore S. Satish, Timothy Edward McGreevy, James J. Buettner, David A. Cusac, Gregory J. Kaufmann +8 more 2003-11-18 $25,889,000
6626137 Automatic lash adjuster 2003-09-30 $27,434,000
6349686 Hydraulically-driven valve and hydraulic system using same Dennis D. Feucht 2002-02-26 $30,577,000
6092495 Method of controlling electronically controlled valves to prevent interference between the valves and a piston 2000-07-25 $8,431,000
5931131 Valve cover assembly having an integrated heat exchanger for cooling exhaust gases 1999-08-03 $25,371,000
5927257 Pressure compensating exhaust gas recirculation valve 1999-07-27 $35,119,000
5724939 Exhaust pulse boosted engine compression braking method James J. Faletti 1998-03-10 $11,671,000
5692462 Transfer valve assembly providing variable valve lash 1997-12-02 $29,656,000
5647307 Valving for dual compression/expansion engine and method of assembling the same John M. Clarke 1997-07-15 $17,755,000
5611308 Apparatus for interconnecting an actuator and an exhaust valve opening member 1997-03-18 $12,066,000
5435280 Method of mounting a ceramic valve guide assembly Michael H. Haselkorn 1995-07-25 $20,998,000
5372103 Method of mounting a ceramic valve guide assembly Michael H. Haselkorn 1994-12-13 $19,452,000
5365894 Valve actuation device 1994-11-22 $7,888,000
5205259 Modified cylinder head John M. Clarke, James J. Faletti 1993-04-27 $6,823,000
D316986 Body for utility vehicle Kevin K. Hunter, Kintaro Matsumoto 1991-05-21