Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Darien, CT ranks #2,054 worldwide for total patents filed all time, with 1,564 patents from 243 inventors. Leading employers of inventors based in Darien, CT include Heartflow, Toshiba Global Commerce Solutions, IBM.

Showing 1–50 of 243 inventors

Rank Inventor Primary Company Patents
1 Leo Grady Heartflow 302
2 Sharathchandra U. Pankanti Toshiba Global Commerce Solutions 139
3 Sharathchandra U. Pankanti IBM 83
#4 Matthew During Ovid Therapeutics 70
#5 Lisa Webb American Express 61
#6 Gerald C. Freeman Pitney Bowes 39
#7 Keith E. Schubert Pitney Bowes 25
#8 Patrick E. Wind Zephyr Lock 24
#8 Perry A. Pierce Pitney Bowes 24
#10 Albert W. Scribner Pitney Bowes 23
#11 George H. Leonard Hamlin Transmission 21
#11 Andrew T. Kostanecki Kraft General Foods 21
#13 Lee Hunter Impulse Radio 19
#14 Raju Kucherlapati Abgenix 18
#15 Haunn-Lin Tony Chen Cytec Technology 17
#15 Charles Gilliam Contentguard Holdings 17
#17 Maryann Lehmann Shade Analyzing Technologies 16
#17 Jeaha Yang IBM 16
#19 Kyle D. Rothschild Sound Shore Innovations L.L.C. 15
#19 David E. Henderson Vlsi Technology 15
#21 James P. Dwyer RTX (Raytheon) 14
#21 Raymond H. Van Wagener Magnetek 14
#23 Steven M. Antler Staino 13
#24 Ristomatti Ratia Design Ideas 12
#25 William R. Smith-Vaniz Niagara Mohawk Power 11
#25 Humfrey N. Udall Thermatool 11
#27 Daniel J. Carey Dell Products 10
#28 Michael J. Critelli Pitney Bowes 9
#28 Donald L. King Envirotech 9
#28 David A. Rochon Catalina Marketing 9
#31 Matthew T Zielinski Kimberly-Clark Worldwide 8
#32 Milan Galik Interactive Brokers 7
#32 Scott M. Johnston Google 7
#32 Willard E. Carlson Congoleum 7
#32 William Seibold Marlido 7
#32 Jennifer Antczak PepsiCo 7
#32 Tristram C. Dunn 7
#32 Pierre Lahaussois Unknown 7
#39 Timothy Potts Ipc Systems 6
#39 Richard Klingaman Colgate-Palmolive 6
#39 Brock L. Nigg Integrated Energy Services 6
#39 Abe Offner Perkinelmer 6
#39 Carl P. Kremer, Jr. Mallinckrodt 6
#39 Frederic C. Schaefer American Cyanamid 6
#39 Richard L. Webb American Cyanamid 6
#39 Paul A. Wilks, Jr. 6
#39 Yen Tran Mastercard 6
#39 Michael W. Glynn The Progeria Research Foundation 6
#49 Albert G. Robustelli American Cyanamid 5
#49 Emil L. Torick Broadcast Technology Partners 5

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