Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Darien, IL ranks #4,015 worldwide for total patents filed in 2021, with 28 patents from 22 inventors. Leading employers of inventors based in Darien, IL include Praxair Technology, Ppg Industries Ohio, Electro-Motive Diesel. That works out to 1.3 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–22 of 22 inventors

Rank Inventor Primary Company Patents
1 Sameer H. Israni Praxair Technology 3
2 Shengkui Hu Ppg Industries Ohio 2
2 Vijaya Kumar Electro-Motive Diesel 2
2 Yury Ivanyushenkov Uchicago Argonne 2
2 David Hinkle Securly 2
#6 Tianyuan Ma Uchicago Argonne 1
#6 Caroline Cvetkovic 1
#6 Adarsh Gopinathan Nair Progress Rail Locomotive 1
#6 Lili Zhou 1
#6 Hirohide Toyama Shuffle Tech International 1
#6 Alexei Kanareykin Euclid Techlabs 1
#6 Siddique Ali Khateeb Razack Audi Ag 1
#6 Thomas Michael Chlystek Cnh America 1
#6 Anton Ziegler Anton Paar Gmbh 1
#6 Venkata Aditya Ayyagari Uchicago Argonne 1
#6 Adam P. Tornheim Uchicago Argonne 1
#6 Efim Gluskin Uchicago Argonne 1
#6 John V. DeLuca 1
#6 Stacy Mo MIT 1
#6 Sumit Bhattacharya NVIDIA 1
#6 David J. Wendell Cummins-Allison 1
#6 Xiaoqi Cui The Nielsen Company (Us) 1

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