Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Fullerton, CA ranks #749 worldwide for total patents filed all time, with 4,535 patents from 1,038 inventors. Leading employers of inventors based in Fullerton, CA include Union Oil Company Of California, Usgi Medical, Alltrade Tools. That works out to 31.6 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–50 of 1,038 inventors

Rank Inventor Primary Company Patents
1 Terrance F. Little 161
2 Donald C. Young Union Oil Company Of California 116
3 Richard C. Ewers Usgi Medical 109
#4 Hector Hernandez Alltrade Tools 92
#5 Edward K. Lee Alfred E. Mann Foundation For Scientific Research 89
#6 Min-Young Park Samsung 77
#7 Jack Gershfeld 62
#8 Steve Smith Texas Instruments 60
#9 Donald J. Shanklin Hayes Products, Llc. 57
#10 Kenneth W. Cowans B/E Aerospace 51
#11 Carol E. Eberhardt Medtronic 48
#12 Seiji Hirano Mazda Motor 42
#13 Jane Lee Ossur Hf 29
#14 Duane D. Logsdon The Logsdon Foundation 27
#15 Jean-Paul Schowalter Honda Motor Co. 25
#15 Hoai T. Dovan Union Oil Company Of California 25
#15 Allen L. Solomon Grumman Aerospace 25
#15 Mark D. Doublin Bell Sports 25
#19 William W. Cowans B/E Aerospace 24
#19 Robert Weber 6D Helmets 24
#19 C. Leo Fender 24
#19 Stan W. Livingston RTX (Raytheon) 24
#19 William T. Edwards Sonics 24
#24 Kil Yong Sung Calico Brands 23
#24 Sungwoo Min Biosense Webster (Israel) 23
#24 Harry M. Riegelman Rusco Industries 23
#27 Albrecht Gass Smartshift Technologies 22
#27 Jackie R. See Rengene Biotechnology Co. 22
#27 Timothy R. Bumbalough Abbott 22
#27 Nirav Patel Vistaprint Schweiz Gmbh 22
#31 Wilfred E. Boehringer 21
#31 Ilan Golecki Honeywell 21
#31 Philip J. Bromley Virun 21
#31 Jin Young Sohn Stereo Display 21
#35 Byung Il Ham U.S. Energy Technologies 20
#35 Robert H. Hass Union Oil Company Of California 20
#35 Walter Dennis Clark Northrop Grumman 20
#35 Jason Belbey Oakley 20
#39 David Cook Clean Train Propulsion 19
#40 Adam Sbeglia Merchsource 18
#40 Dieter Paul Kingston Technology 18
#40 Seon Kyu Lee Sancro International 18
#40 Steve Jennes Nikola 18
#40 Tuan M. Quach Intel 18
#45 Carl R. Stevenson Agere Systems 17
#45 Lingere D. Goddard Kraco Enterprises, Llc. 17
#45 Siddhartha Dattagupta Cisco 17
#45 Jon Marine Mattel 17
#45 Russell R. Newcomb NVIDIA 17
#45 Adolf Schoepe Fluidmaster 17

Part of California