Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Wethersfield, CT ranks #1,431 worldwide for total patents filed in 2021, with 96 patents from 36 inventors. Leading employers of inventors based in Wethersfield, CT include Carrier, RTX (Raytheon), Hamilton Sundstrand. That works out to 3.5 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–36 of 36 inventors

Rank Inventor Primary Company Patents
1 Michael J. Birnkrant Carrier 16
2 Steven D. Porter RTX (Raytheon) 12
3 Ziyou Xiong RTX (Raytheon) 7
#4 Leo J. Veilleux, Jr. Hamilton Sundstrand 6
#4 Mark A. Stephens RTX (Raytheon) 6
#6 Craig M. Beers Hamilton Sundstrand 4
#7 Jeffrey Ernst Hamilton Sundstrand 3
#7 Russell B. Witlicki RTX (Raytheon) 3
#9 Kelly M. Harrington RTX (Raytheon) 2
#9 Jeffrey J. Lienau RTX (Raytheon) 2
#9 Michael O'Keefe Premier Manufacturing Group 2
#9 Joel H. Wagner RTX (Raytheon) 2
#9 Yuk-Kwan Brian Yuen RTX (Raytheon) 2
#9 Henry H. Thayer RTX (Raytheon) 2
#9 William C. Lamberti RTX (Raytheon) 2
#9 Armando Amador RTX (Raytheon) 2
#9 Peter J. Walsh Duro-Test 2
#9 Eli Cole Warren RTX (Raytheon) 2
#9 Gopal R. Krishnan Otis Elevator 2
#20 Jerusalem Negash RTX (Raytheon) 1
#20 Sheryl Brothers Otis Elevator 1
#20 Joseph Zacchio RTX (Raytheon) 1
#20 Eric J. Albrecht Mitsubishi Power Americas 1
#20 Christopher M. Hayes The Travelers Indemnity 1
#20 Daniel C. Nadeau RTX (Raytheon) 1
#20 Christopher S. Griffin 1
#20 Scott A. Liljenberg Carrier 1
#20 Brendan M. Lenz RTX (Raytheon) 1
#20 George Scott Copeland Otis Elevator 1
#20 Joo Sub Rhee RTX (Raytheon) 1
#20 Richard J. Rubendall RTX (Raytheon) 1
#20 Jason M. Gringhaus RTX (Raytheon) 1
#20 Thomas Gietzold Carrier 1
#20 Denise Hallisey Merit Medical Systems 1
#20 Michael A. Chaffin 1
#20 Christopher Adriaan van Oss Hamilton Sundstrand 1

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