Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Plainville, CT ranks #3,812 worldwide for total patents filed all time, with 764 patents from 147 inventors. Leading employers of inventors based in Plainville, CT include Otis Elevator, GE, Beekly.

Showing 1–50 of 147 inventors

Rank Inventor Primary Company Patents
1 Richard N. Fargo Otis Elevator 92
2 Raymond K. Seymour GE 58
3 Cecil Rivers, Jr. GE 35
#4 Dennis J. Doughty GE 30
#5 Richard E. Bernier GE 27
#6 Paul T. Rajotte GE 22
#7 Girish Hassan GE 17
#7 David J. Lesslie GE 17
#7 Robert L. Owens 17
#10 Mark Broyles Beekly 15
#10 Mark A. Boeke RTX (Raytheon) 15
#12 Sean McDonnell GE 14
#12 Ronald R. Russell GE 14
#12 Laurance Robbins Colt Defense 14
#15 William H. Calder GE 11
#15 Bruce Foster Hasbro 11
#17 William F. Olashaw GE 10
#18 Walter A. Helm Teleco Oilfield Services 9
#18 Salvatore A. Cancellieri The Wiremold 9
#18 Harry Huang Otis Elevator 9
#18 Erik Khzouz Otis Elevator 9
#22 Reade R. Clemens RTX (Raytheon) 8
#22 Steven M. Millett Otis Elevator 8
#22 Harshad Tanna Telcordia Technologies 8
#22 Gary Tremley Henkel Limited 8
#22 Richard J. Marchetti Hartford Fire Insurance 8
#22 Mahesh Munavalli Smiths Medical Asd 8
#28 Brenton P. Chasse IBM 7
#28 David A. Ferullo GE 7
#28 Hans S. Berger Coleco Industries 7
#31 Bruce David Seymour Pure Depth 6
#31 Harold F. Larkin GE 6
#31 Tyler Braden Diomedi Abb Schweiz Ag 6
#31 George J. Boucher GE 6
#31 Kevin A. Kaminski Colt'S Manufacturing Company 6
#31 Andrew Zielke Otis Elevator 6
#37 John Matthew Hutson Abb Schweiz Ag 5
#37 Denis A. Perzan GE 5
#37 Leonard M. Walsh RTX (Raytheon) 5
#37 Macha Narender GE 5
#37 Herbert J. Lillibridge RTX (Raytheon) 5
#37 Richard A. Dziura GE 5
#37 David A. Ouellette Winchester Electronics 5
#44 Mathias E. Liistro, Jr. Henkel Limited 4
#44 Nathan Fuhrman Combustion Engineering 4
#44 Richard B. Thibedeau Intel 4
#44 Noreen M. O'SULLIVAN 4
#44 Sajan Shrestha Voyant Photonics 4
#44 Michael Cote Harrow Products 4
#44 Thomas E. Glassey Otis Elevator 4

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