Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Iowa ranks #26 among US states for total patents filed in 2025, with 2,822 patents from 1,331 inventors across 231 cities. On a per-capita basis that is 0.9 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.

Top Cities in Iowa 2025

Rank City Patents Inventors
#1 Ames, IA 198 133
#2 Cedar Rapids, IA 192 93
#3 Ankeny, IA 174 66
#4 Johnston, IA 126 54
#5 Granger, IA 123 5
#6 Dubuque, IA 122 52
#7 Des Moines, IA 110 44
#8 Iowa City, IA 107 78
#9 Bettendorf, IA 106 45
#10 Marion, IA 82 42
#11 Waukee, IA 60 18
#12 Cedar Falls, IA 59 39
#13 Urbandale, IA 53 30
#14 West Des Moines, IA 50 22
#15 Algona, IA 47 2
#16 Marshalltown, IA 43 25
#17 Pella, IA 42 29
#18 Grimes, IA 41 12
#19 Oskaloosa, IA 37 16
#20 Kelley, IA 36 1
#21 Panora, IA 34 1
#22 Davenport, IA 34 21
#23 North Liberty, IA 33 13
#24 Clive, IA 30 14
#25 Adel, IA 29 2

Top Inventors in Iowa 2025

Rank Inventor City Company Patents
1 Justin T. Mason Granger M.S. Technologies, L.L.C. 119
2 Jeffrey M. Sernett Kelley Monsanto Technology 36
2 Andrea Beth Kalvig Waukee Pioneer (Corteva) 36
#4 William H. Eby Panora Stine Seed Farm 34
#5 Elliot Lee Heffner Des Moines Pioneer (Corteva) 32
#6 Sara Jane Lira Adel Pioneer (Corteva) 28
#7 Tara Luana Barrett Tarnowski Des Moines Pioneer (Corteva) 27
#8 Brian Douglas De Vries Algona Pioneer (Corteva) 26
#9 Gary R. Stangland Cedar Rapids Monsanto Technology 24
#10 Joann E Harren Algona Pioneer (Corteva) 21
#10 William Ellsworth Wyant, III Madrid Pioneer (Corteva) 21
#10 Arturo Jason Morales Ankeny Pioneer (Corteva) 21
#13 Hanna J. Wickman Grimes John Deere 20
#13 Bhanu Kiran Reddy Palla Bettendorf John Deere 20
#13 Jenna L. Rettenberger Dubuque John Deere 20
#13 Andrew L. Noll Dubuque John Deere 20
#17 Jason A. Ryon Carlisle Delavan 17
#17 Russell Fox Stuart Pioneer (Corteva) 17
#19 Eric Scott Riedeman Alton Pioneer (Corteva) 15
#20 Paul Dayton Ankeny Treace Medical Concepts 14
#21 Tj T. Kwon Marion Rockwell Collins 12
#22 Joy Vuijk Johnston John Deere 11
#22 Carolyn R. Herman La Porte City John Deere 11
#22 William B. Sorsby Cedar Rapids Rockwell Collins 11
#25 Andrew Jon Ross Lisbon Pioneer (Corteva) 10

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