Topic leaderboard

F02N

Starting of combustion engines

Ranked by the PatentIndex Score — a 1–99 percentile within F02N · public-visibility date · generated 2026

Rising· last 2 yrs

Inventors whose newest F02N patents became public in the last 2 years — the current frontier

  1. 199Bradon Zeitler25 patents · 275 citations
  2. 296Chad Smith25 patents · 275 citations
  3. 392Jessica Szymanski25 patents · 275 citations
  4. 488Mitchel Nordahl22 patents · 248 citations
  5. 583Mikel Ullman22 patents · 248 citations
  6. 679Deepak Shukla23 patents · 244 citations
  7. 775Ed Trinklein23 patents · 244 citations
  8. 871Rachell Harsh23 patents · 244 citations
  9. 967Mike Bolton21 patents · 178 citations
  10. 1063Neil Dekarske20 patents · 178 citations
  11. 1158Shawn Naglik20 patents · 178 citations
  12. 1254Dave Marek17 patents · 151 citations
  13. 1350Evan Schertz17 patents · 151 citations
  14. 1446Joseph Dehaan17 patents · 151 citations
  15. 1542Matt Mathison17 patents · 151 citations
  16. 1638Michael Koenigs17 patents · 151 citations
  17. 1733Mike Yanacek17 patents · 151 citations
  18. 1829Nader Nasr17 patents · 151 citations
  19. 1925Ryan Crabtree17 patents · 151 citations
  20. 2021Tim Voight17 patents · 151 citations
  21. 2117Jeffrey Allen Doering68 patents · 368 citations
  22. 2213Patrick J. Clarke13 patents · 110 citations
  23. 238Brian F. Butler10 patents · 103 citations
  24. 244Linh Nguyen8 patents · 96 citations
  25. 251Derek Michael Underhill30 patents · 118 citations

Active· last 5 yrs

Sustained F02N output across the last 5 years

  1. 199Christopher J. Hess19 patents · 27,144 citations
  2. 296William B. Weisenburgh, Ii19 patents · 27,144 citations
  3. 392Carl J. Shurtleff6 patents · 5,390 citations
  4. 488Bradon Zeitler25 patents · 275 citations
  5. 583Chad Smith25 patents · 275 citations
  6. 679Jessica Szymanski25 patents · 275 citations
  7. 775Mitchel Nordahl22 patents · 248 citations
  8. 871Mikel Ullman22 patents · 248 citations
  9. 967Deepak Shukla23 patents · 244 citations
  10. 1063Ed Trinklein23 patents · 244 citations
  11. 1158Rachell Harsh23 patents · 244 citations
  12. 1254Mike Bolton21 patents · 178 citations
  13. 1350Neil Dekarske20 patents · 178 citations
  14. 1446Shawn Naglik20 patents · 178 citations
  15. 1542Atsushi Tabata18 patents · 673 citations
  16. 1638Dave Marek17 patents · 151 citations
  17. 1733Evan Schertz17 patents · 151 citations
  18. 1829Joseph Dehaan17 patents · 151 citations
  19. 1925Matt Mathison17 patents · 151 citations
  20. 2021Michael Koenigs17 patents · 151 citations
  21. 2117Mike Yanacek17 patents · 151 citations
  22. 2213Nader Nasr17 patents · 151 citations
  23. 238Ryan Crabtree17 patents · 151 citations
  24. 244Tim Voight17 patents · 151 citations
  25. 251Matthew James Manzella8 patents · 451 citations

All-time canon

Career PatentIndex Score in F02N

  1. 199Christopher J. Hess19 patents · 27,144 citations
  2. 296William B. Weisenburgh, Ii19 patents · 27,144 citations
  3. 392Carl J. Shurtleff6 patents · 5,390 citations
  4. 488Alex J. Severinsky15 patents · 2,183 citations
  5. 583Theodore Louckes14 patents · 1,686 citations
  6. 679Axel O. Zur Loye8 patents · 748 citations
  7. 775Patrick M. Pierz5 patents · 645 citations
  8. 871Shigetaka Kuroda11 patents · 1,026 citations
  9. 967Gregory I. Rozman26 patents · 1,640 citations
  10. 1063Albert L. Markunas11 patents · 1,204 citations
  11. 1158Shuji Nagano7 patents · 865 citations
  12. 1254Thomas Pels21 patents · 1,687 citations
  13. 1350Klaus-Peter Zeyen17 patents · 1,261 citations
  14. 1446Ullrich Masberg15 patents · 1,060 citations
  15. 1542Andreas Grundl12 patents · 972 citations
  16. 1638Bernhard Hoffmann12 patents · 972 citations
  17. 1733Bradon Zeitler25 patents · 275 citations
  18. 1829Chad Smith25 patents · 275 citations
  19. 1925Jessica Szymanski25 patents · 275 citations
  20. 2021Mitchel Nordahl22 patents · 248 citations
  21. 2117Mikel Ullman22 patents · 248 citations
  22. 2213Alexander Cook7 patents · 740 citations
  23. 238Deepak Shukla23 patents · 244 citations
  24. 244Ed Trinklein23 patents · 244 citations
  25. 251Rachell Harsh23 patents · 244 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth