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

Danan Dou — 37 Patents

JDJohn Deere: 31 patents #56 of 5,518Top 2%
Delphi Technologies: 5 patents #650 of 4,124Top 20%
Cedar Falls, IA: #2 of 441 inventorsTop 1%
Iowa: #199 of 15,303 inventorsTop 2%
Overall (All Time): #88,321 of 4,157,543Top 3%
37 Patents All Time
Danan Dou has been granted 37 US patents while listed as an inventor at John Deere. The first was granted in 2002 and the most recent in October 2025. Danan Dou ranks #88,321 of 4,157,543 US inventors in our database (top 2.1%). Patent records list Danan Dou in Cedar Falls, IA, US.

Issued Patents All Time

Showing 1–25 of 37 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12435654 Work vehicle and aftertreatment system therefor Eric J. Hruby, Eric J. Haaland 2025-10-07
12435676 Dual-fuel engine systems for work vehicle Craig W. Lohmann 2025-10-07
12270354 Work vehicle power system with low carbon fuel blends Craig W. Lohmann, Taner Tuken, Daniel A. Nehmer, Barbara E. Goodrich 2025-04-08
12055106 Work vehicle power system with methane and hydrogen fuel blend Scott R. Miles 2024-08-06 $92,507,000
12044187 Work vehicle low cetane power system with external to cylinder compression ignition assistance Kevin DeVries, Craig W. Lohmann 2024-07-23 $62,241,000
12018626 Work vehicle dual fuel compression ignition power system Scott R. Miles, Bryan T. Geisick 2024-06-25 $68,944,000
11939929 Engine electrified air system including electric turbocharger and exhaust gas recirculation pump Eric J. Haaland 2024-03-26
11920507 Method for regulating exhaust emissions Shyan-Cherng Huang, Taner Tuken, Thomas M. Harris 2024-03-05 $281,781,000
11815000 Exhaust gas treatment system with improved low temperature performance Eric J. Hruby, Bryan T. Geisick 2023-11-14 $149,793,000
11643955 Diesel exhaust fluid injector heater Derek A. Weiss 2023-05-09 $93,625,000
11635039 Work vehicle alcohol-based power system with on-board ether Craig W. Lohmann 2023-04-25 $93,752,000
11624309 Exhaust gas treatment system and method with reductant injection and close-coupled treatment element Eric J. Hruby, Shyan-Cherng Huang 2023-04-11 $160,360,000
11619156 Heater control for engine exhaust Eric J. Hruby 2023-04-04 $100,947,000
11572673 Work vehicle power system with decoupled engine air system components Eric J. Haaland 2023-02-07 $127,192,000
11572824 Electrified engine boost components for mitigating engine stalling in a work vehicle Scott R. Miles, Pratir Punjani 2023-02-07 $127,192,000
11536213 Engine system with electrified air system components for managing emissions of nitrogen oxides in a work vehicle Scott R. Miles 2022-12-27 $233,744,000
11073067 Exhaust gas treatment system and method with reductant injection and close-coupled treatment element Eric J. Hruby, Shyan-Cherng Huang 2021-07-27 $74,916,000
11022016 Exhaust gas treatment system and method with improved regeneration Shyan-Cherng Huang, Eric J. Hruby 2021-06-01 $84,910,000
10961887 Integrated reductant mixer and heater apparatus for exhaust treatment systems Shyan-Cherng Huang 2021-03-30 $253,399,000
10927740 System for regulating exhaust emissions Shyan-Cherng Huang, Taner Tuken, Thomas M. Harris 2021-02-23 $88,082,000
10767532 Exhaust gas treatment system and method having improved low temperature performance Shyan-Cherng Huang, Ayyappan Ponnaiyan 2020-09-08 $87,641,000
10718245 Exhaust gas treatment system and method having improved low temperature performance Shyan-Cherng Huang, Ayyappan Ponnaiyan 2020-07-21 $85,233,000
9145818 Exhaust gas sampling device William F. Gavin, Colton J. Salyards 2015-09-29 $8,130,000
8999277 Diesel exhaust fluid formulation that reduces urea deposits in exhaust systems Ponnaiyan Ayyappan, Thomas M. Harris 2015-04-07 $14,174,000
8961818 Diesel exhaust fluid formulation that reduces urea deposits in exhaust systems Ponnaiyan Ayyappan, Thomas M. Harris 2015-02-24 $18,089,000