Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Saint Peters, MO ranks #1,644 worldwide for total patents filed all time, with 2,025 patents from 433 inventors. Leading employers of inventors based in Saint Peters, MO include Mastercard, Emerson Electric, Emerson Climate Technologies.

Showing 1–50 of 433 inventors

Rank Inventor Primary Company Patents
1 Steven Charles Davis Mastercard 69
2 Mark J. Tomasiak Emerson Electric 66
3 Joseph G. Marcinkiewicz Emerson Climate Technologies 56
#4 Kevin T. Slattery The Boeing 43
#5 Vincent R. Long Kranos Ip 40
#6 Richard J. Phillips Globalwafers Co. 38
#7 Glen C. Parker Federal-Mogul Motorparts 35
#7 John L. Theising Emerson Electric 35
#9 Jeffrey L. Young Emerson Electric 33
#10 Joseph C. Holzer Memc Electronic Materials 30
#11 Daniel D. Bloch The Boeing 29
#11 Thomas J. Golab Hunter Engineering 29
#13 David W. Berberich Mallinckrodt 28
#14 John K. Foster The Boeing 27
#14 Ronald L. Bailey Young Dental Manufacturing Company 1 27
#16 Brian Marsh Honeywell 26
#17 David C. Beck Halliburton Energy Services 25
#18 John C. Waldrop, III The Boeing 23
#19 John A. Pitney Memc Electronic Materials 22
#20 Steven Rhea The Patent Store 21
#21 R. Keith Webber G.D. Searle 19
#21 Parthasarathi Rajagopalan E.I. Du Pont De Nemours And 19
#21 Gaurab Samanta Globalwafers Co. 19
#21 William R. Lewis Emerson Electric 19
#21 Christopher Eric Mullen Thermo Finnigan 19
#26 David R. Hult Emerson Electric 18
#27 David Haynes Aclara Technologies 16
#28 Sheldon Foss Compucredit Intellectual Property Holdings Corp. Iii 15
#28 Salvador Zepeda Globalwafers Co. 15
#28 Jack Greenwood Digital Concepts Of Missouri 15
#28 Gregory L. Hobson Esco Electronics 15
#32 William Nathan Brunner Spectrum Brands 14
#32 Charles R. Graham 14
#32 Raymond E. Ragland Atd 14
#32 Jason J. Jurkowski Emerson Electric 14
#36 Tonya S. Ehlmann Climate 13
#36 Curtis M. Ashford The Boeing 13
#36 Robert J. Meister Monsanto Technology 13
#36 Karmen D. Cox Emerson Electric 13
#36 Mark A. Leiber Monsanto Technology 13
#41 Raymond P. Twohy Hussmann 12
#41 Daniel Joseph Pingel Biomerieux 12
#41 James B. Pike Alza 12
#44 Michael J. Emmendorfer Arris Enterprises 11
#45 Judy K. Burns Progressive Balloons 10
#45 Joseph P. Winkelmann The Boeing 10
#45 Kevin S. Carney Mastercard 10
#45 Douglas William Gledhill The Procter & Gamble 10
#45 Daniel Perotti Etrailer 10
#50 Yun-Biao Xin Memc Electronic Materials 9

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