Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Ledyard, CT ranks #4,645 worldwide for total patents filed all time, with 588 patents from 107 inventors. Leading employers of inventors based in Ledyard, CT include Thermo Fisher, Pfizer, Hyperfine Research.

Showing 1–50 of 107 inventors

Rank Inventor Primary Company Patents
1 James A. Ball Thermo Fisher 30
1 Ronald T. Wester Pfizer 30
1 William J. Mileski Hyperfine Research 30
#4 Allen J. Duplantier Pfizer 25
#5 Joseph E. Dupuis Hubbell Incorporated 24
#6 John I. Trujillo Pfizer 23
#6 H. James Harwood The University Of Akron 23
#8 David B. Noddin W.L. Gore & Associates Gmbh 20
#9 Robert Richard Murray Heidelberg Druckmaschinen 18
#9 Peter R. Rose Pfizer 18
#11 Dennis J. Hoover Pfizer 17
#12 Nicholas A. Saccomano Pfizer 16
#12 Tamim F. Braish Pfizer 16
#12 Justin Ian Montgomery Pfizer 16
#15 John L. LaMattina Pfizer 13
#16 Joseph Scott Warmus Warner-Lambert Company 11
#17 Richard P. Gill Co-Diagnostics 10
#17 Goss S. Kauffman Forma Therapeutics 10
#19 Aaron S. Butler RTX (Raytheon) 9
#20 Robert J. Pellowski Emc 8
#20 Anthony Michael Campeta Pfizer 8
#20 Tuan Phong Tran Pfizer 8
#20 Richard J. Daines Dekalb Genetics 8
#20 Andrew R. Peters Lincoln Global 8
#25 Ronald LaDuca Ags 7
#25 Stanley L. Keely Pfizer 7
#25 George T. Magnus-Aryitey Pfizer 7
#25 Wayne Korteweg American Regent 7
#29 Charles Formhals King-Seeley Thermos 6
#29 HuaZhu Ke Pfizer 6
#29 Felix Vajdos Genentech 6
#32 Christopher Gabel Amgen 5
#32 Richard L. McKrell Heidelberg Harris 5
#32 Mary Ellen Snider Astra Ab 5
#35 Donald D. Beck General Motors 4
#35 Douglas C. Gilbert Gte Internetworking Incorporated 4
#35 Dennis E. Danley Scios 4
#35 Ivan G. Otterness Pfizer 4
#35 Lawrence M. Sherman Pfizer 4
#40 Liuqing Wei Pfizer 3
#40 Sarah K. Blodgett 3
#40 Benjamin Micah Collman Gilead Sciences 3
#40 Caroline Proulx-Lafrance Pfizer 3
#40 Christophe Philippe Allais Pfizer 3
#40 Earl D. Duback The Orvis Company 3
#40 James Harwood Gilead Apollo 3
#40 Delvin R. Knight, Jr. Pfizer 3
#40 Becky Durtschi Pfizer 3
#40 Samuel E. Watrous Ortronics 3
#40 Timothy Riendeau Gtech Rhode Island 3

Part of Connecticut