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

E.I. Du Pont De Nemours And — 21,503 Patents

Rank (All Time): N/A of 106,120
12,129 inventors
21,503 Patents All Time

Top Inventors at E.I. Du Pont De Nemours And All Time

Showing 1–50 of 12,129 inventors

RankNamePatents
1 Robert E. Hefner, Jr. 179
2 Robert DiCosimo 159
3 Allen Capron Sievert 150
#4 Mario Joseph Nappa 138
#5 Barbara Haviland Minor 137
#6 Mark S. Payne 135
#7 Leo Ernest Manzer 129
#8 Rebecca E. Cahoon 112
#9 Ying Wang 108
#10 Richard Allen Hayes 102
#11 Velliyur Nott Mallikarjuna Rao 99
#12 Norman Herron 97
#13 David A. Wilson 93
#14 Quinn Qun Zhu 90
#15 George Levitt 89
#16 Che-Hsiung Hsu 83
#17 John Edward Gavagan 82
#18 Kenneth Warren Hang 78
#19 Stephen M. Allen 78
#20 Saverio Carl Falco 77
#21 George Philip Lahm 77
#22 Viacheslav A. Petrov 77
#23 Robert Clayton Wheland 73
#24 Mark Andrew Harmer 73
#25 Hari Babu Sunkara 71
#26 Howard Glenn Damude 70
#27 Andrew Edward Feiring 70
#28 Robert John Barsotti 69
#29 Carl G. Krespan 68
#30 Billy F. McCutchen 66
#31 Anthony J. Kinney 66
#32 Nora Sabina Radu 64
#33 Thomas Martin Stevenson 63
#34 Daniel David Lecloux 63
#35 Jimmy D. Earls 63
#36 Robert D. Fallon 63
#37 Narendra S. Yadav 63
#38 Chung P. Park 61
#39 Francis P. McCullough, Jr. 60
#40 Paul R. Resnick 60
#41 Lynda Kaye Johnson 60
#42 Steven Dale Ittel 59
#43 Wilson Tam 59
#44 Neville Everton Drysdale 58
#45 James C. Stevens 58
#46 Joachim C. Ritter 57
#47 William B. Farnham 57
#48 David Richard Corbin 56
#49 Donald L. Schmidt 56
#50 Kostantinos Kourtakis 55