Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Cos Cob, CT ranks #4,571 worldwide for total patents filed all time, with 600 patents from 77 inventors. Leading employers of inventors based in Cos Cob, CT include Protegrity, Picower Institute For Medical Research, IBM. That works out to 87.3 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–50 of 77 inventors

Rank Inventor Primary Company Patents
1 Ulf Mattsson Protegrity 147
2 Richard J. Bucala Picower Institute For Medical Research 57
3 Hani T. Jamjoom IBM 51
#4 Kazuna Tanaka Lifefactory 42
#5 Louis N. Giannuzzi Unknown 38
#6 Mikel Durham PepsiCo 34
#7 Kristen L. Hinds Conair 28
#8 Richard W. Mason Ciba Corning Diagnostics 21
#9 Edward B. Bretschger Kolcraft Enterprises 14
#10 Maia Magdalena Neumann Boolabox 11
#11 Simon Byford Moss Ust Global (Singapore) Pte. Limited 9
#12 Xiaoqiang Luo IBM 8
#13 Daniel C. Stein Phokus Research Group 7
#14 Andrew Oliver Qtm 6
#14 Mladen Franovic Danaher 6
#14 Jeffrey Silverman Toddler U 6
#17 James Carr New York Society For The Ruptured And Crippled, Maintaining The Hospital For Special Surgery 5
#18 Karen Duncan O&M Halyard 4
#18 Michael Yablonski Transcend Medical 4
#18 Padmanabhan Iyer Bank of America 4
#18 Frank Intrieri, Jr. Crossford International 4
#18 James MacPherson Christie Digital Systems Usa 4
#18 Adolph S. Clausi General Foods Limited 4
#18 Kimchi Moyer 4
#18 David Czaja Ketema 4
#26 Kieran Curley Mannkind 3
#26 Karen M. Daidone Goldman Sachs 3
#26 Angelo Toglia 3
#26 Yuriy Shterk Fidessa Trading Uk Limited 3
#30 Blake Zizzi 2
#30 Andres Perez Bay Regeneron Pharmaceuticals 2
#30 Kanuza Tanaka Johnson & Johnson 2
#30 Konstantine Smaguine Interactive Brokers 2
#30 Neal Pomroy 2
#30 Mark Martino Koehler Manufacturing 2
#30 Thomas G. Wolfe Union Carbide 2
#30 William P. Ketcham Unknown 2
#30 Frank A. Posluszny 2
#30 Grace Kao 2
#30 Michael Edward Perrone, II 2
#30 Jeffrey B. Kadin Broadcast Technology Partners 2
#30 David J Schreff 2
#30 Satyanarayana Parimi Charter Communications Operating 2
#30 William C. Sclater United States Tobacco 2
#30 Robert D. Huppunen Thermatool 2
#30 Thomas B. Davis 2
#30 Charles G. Weiss 2
#48 Joseph C. Sturtevant 1
#48 John George Ingham Bank of America 1
#48 John H. Belknap 1

Part of Connecticut