Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Westford, MA ranks #459 worldwide for total patents filed all time, with 7,069 patents from 1,013 inventors. Leading employers of inventors based in Westford, MA include Parallel Wireless, IBM, Color Kinetics Incorporated.

Showing 1–50 of 1,013 inventors

Rank Inventor Primary Company Patents
1 Rajesh Kumar Mishra Parallel Wireless 184
2 Huamin Chen IBM 180
3 Kaitki Agarwal Parallel Wireless 139
#4 Kevin Dowling Color Kinetics Incorporated 99
#5 Uday Gupta Emc 75
#6 Robert C. Weir IBM 68
#7 Mark Chiappetta Irobot 64
#8 William M. Duane Emc 62
#8 Baoxing Chen Analog Devices 62
#10 James E. King Oracle 61
#10 Zhaohui Zhang Juniper Networks 61
#10 Joseph A. Russo IBM 61
#13 William D. Coggio 3M 55
#14 Tianniu Chen Advanced Technology & Materials Co. 53
#15 Boris S. Jacobson RTX (Raytheon) 52
#16 Miguel Galvez Tyco Fire & Security Gmbh 49
#17 Ping Zhang Nektar Therapeutics 47
#18 Jayant Kumar US Army 46
#19 Milind Rajopadhye Bristol-Myers Squibb 43
#19 Michael Rosenstein Applied Materials 43
#19 Stephen C. Evans Interscope 43
#19 Amad Tayebi Nytell Software 43
#19 Ross W. Callon Juniper Networks 43
#24 Bryan Clark IBM 41
#24 Vivek Goyal IBM 41
#24 David James Ryan Spectrum Effect 41
#27 Matthew Edwin Koski Smith & Nephew 40
#27 Pradeep K. Dhal Genzyme 40
#29 Jitender Arora Parallel Wireless 39
#29 Jay Walton Qualcomm 39
#29 Jun Tian Fina Technology 39
#32 Yan Zhang Elite Electronic Material (Kunshan) Co. 38
#33 Jeffrey W. Mammen Irobot 37
#34 Gerald Fredrickson Boston Scientific Scimed 36
#35 Sanjay Agrawal Microsoft 35
#35 Raymond Lareau Angiodynamics 35
#37 David Eugene Baker Corning Incorporated 34
#38 Andrew Jankevics Metrologic Instruments 33
#39 Richard A. Earl Dupont Merck Pharmaceutical 32
#40 Donald Fischer IBM 31
#40 Anthony DiLeo Millipore 31
#40 Murat Belge Aware 31
#43 Srinivas Nishtala Scimed Life Systems 30
#43 Robin M. Mathews Directv 30
#45 William Stronge Emc Ip Holding Company 29
#45 Michael F. Rubner MIT 29
#47 Zhi-Gang Liu NVIDIA 28
#47 Bruce A. Kelley, Jr. Netscout Systems 28
#47 Mark M. Doherty Skyworks Solutions 28
#50 John R. Feehrer Oracle 27

Part of Massachusetts