Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Phoenix, MD ranks #4,477 worldwide for total patents filed all time, with 615 patents from 94 inventors. Leading employers of inventors based in Phoenix, MD include Black & Decker, Ep Technologies, The United States Of America, As Represented By The Secretary, Department Of Health And Human Services.

Showing 1–50 of 94 inventors

Rank Inventor Primary Company Patents
1 Robert P. Welsh Black & Decker 160
2 Jerome Jackson Ep Technologies 49
3 Michael P. Baron Black & Decker 36
#4 Nigel H. Greig The United States Of America, As Represented By The Secretary, Department Of Health And Human Services 27
#5 Eugene deJuan The Johns Hopkins University 18
#5 John T. Isaacs Genspera 18
#7 Nicholas E. Achterberg Black & Decker 17
#8 Erik Alan Holm H.J. Heinz 15
#8 Mark G. Meyer Scientific Games International 15
#10 Robert H. Tegtmeier Parkway Machine 13
#10 Ronald Quiram Black & Decker 13
#10 Martin Richard Wachter D&M Holdings 13
#13 Robert Snow Safeop Surgical 9
#14 Dominic Marazita Lever Brothers Company, Division Of Conopco 8
#14 Stephen Wolford Fan Cans 8
#14 Catholyn T. Griffiths Color Prelude 8
#17 Robert R. Wells The Ward Machinery 7
#17 Suzanne J. Yoon Unknown 7
#17 Joseph H. Acoraci RTX (Raytheon) 7
#17 Ronald Chisholm Sentera 7
#21 Robert David Berkebile Magic Leap 6
#21 Sumi C. Chen The Johns Hopkins University 6
#21 S. Paul Lee Georgetown University 6
#21 Ryan O'Donnell Verizon 6
#21 Stuart R. Amos Fillmaster Systems 6
#21 Richard P. Oberlin Aai 6
#27 Randall F. House Poly-Seal 4
#27 Garth R. McDonald Alto Development 4
#27 Robert W. Shields IBM 4
#27 James B. Babcock Sun Automation 4
#27 Robert J. Chappolini Bfkw 4
#27 Kenneth I. DeWitt Comcast 4
#27 Chen-Yu Yen Gannett Fleming 4
#27 Wayne T. DeJarnette Dejarnette Research Systems 4
#35 Michael W. Clary Prime Technology 3
#35 Nathan W. Scott Cranius 3
#35 George P. Eilbacher 3
#35 Murray Taylor Cubic 3
#35 Theodore Hartka Prime Technology 3
#35 John Brandenburg Millennial Media 3
#35 Thomas F. Gillespie Enterprise Holdings 3
#35 Robert Christopher Utz Teledyne Energy Systems 3
#35 Gary A. Owings Genworth Holdings 3
#44 Robert Kent Nicholson Amgen 2
#44 Michele Welsh 2
#44 Benjamin A. Governale Black & Decker 2
#44 Richard Brashears Black & Decker 2
#44 Gina O'Malley Black & Decker 2
#44 Phillip T. Miller Black & Decker 2
#44 Erin M. Harberts University Of Maryland, Baltimore 2

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