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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DT

Delta T — 145 Patents

Rank (All Time): #4,936 of 105,732Top 5%
108 inventors
145 Patents All Time

Patents per Year

Patents granted per year, 1982 to 2025Bar chart with a peak of 16 patents in 2022.peak 161982: 1 patents19822001: 2 patents2003: 5 patents2004: 2 patents20042005: 1 patents2007: 2 patents2008: 1 patents20082009: 1 patents2010: 2 patents2011: 7 patents20112012: 6 patents2013: 4 patents2014: 13 patents20142015: 3 patents2016: 7 patents2017: 9 patents20172018: 12 patents2019: 6 patents2020: 7 patents20202021: 11 patents2022: 16 patents2023: 12 patents20232024: 10 patents2025: 5 patents2025

Top Inventors at Delta T All Time

Showing 1–50 of 108 inventors

RankNamePatents
1 Richard A. Oleson 41
2 Richard W. Fizer 25
3 Richard M. Aynsley 20
#4 Ernest John Noble 14
#5 Mark A. Toy 12
#6 J. Carey Smith 11
#7 Daniel Dalton 10
#7 Ken Siong Tan 10
#9 David Ladnier 8
#9 Igor Davidenko 8
#9 Jay Fizer 8
#9 Jason H. Fizer 8
#13 Jon Jet Ling 7
#13 Seng Rui Chan 7
#13 Terry M. Birchler 7
#16 Alex Christopher Reed 6
#16 Christian R. Taber 6
#16 Elios Klemo 6
#16 Eric Evans 6
#16 George A. Clark 6
#16 Jason Williams 6
#16 Marc McKinzie 6
#16 Richard Lenser 6
#24 C. Jason Hollan 5
#24 David R. BANKS 5
#24 Jason Bishop 5
#24 Lennie Rhoades 5
#24 Marcus Landon Borders 5
#24 Steven Green 5
#30 Andrew Koukis 4
#30 Erik Turocy 4
#30 Greg Peterson 4
#30 Huey Shane Hurley 4
#30 James M. DESMET 4
#30 Jayme Webb 4
#30 Matthew Mattingly 4
#30 Michael S. Fay 4
#30 Michael Smith 4
#30 Shawn M. Whetstone 4
#30 Thomas James Lesser 4
#41 Adam Glenn Tucker 3
#41 Brian Michael Borgel 3
#41 Edmundo Monti Cortez 3
#41 Ed Quinn 3
#41 Gregory Willis Peterson 3
#41 Kristen K. Hedstrom 3
#41 Mark S. Thompson 3
#41 Marshall White 3
#41 Pete Maley 3
#41 Stephen Alexander Harper 3