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USPTO Patent Rankings Data through Dec 31, 2025
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Robert G. Sperry — 3 Patents in 2021

CUCummins: 2 patents #65 of 337Top 20%
APAchates Power: 1 patents #3 of 11Top 30%
Columbus, IN: #26 of 267 inventorsTop 10%
Indiana: #294 of 3,792 inventorsTop 8%
Overall (2021): #65,395 of 548,734Top 15%
3 Patents 2021

Issued Patents 2021

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11143149 Cobra head air intake ports Terry D. Partridge, Steven L. Leffler, Kartikeya Tyagi, Amit Kulkarni, Pallav Jha 2021-10-12 $29,133,000
11098681 Cobra head air intake ports and intake manifolds Terry D. Partridge, Steven L. Leffler, Kartikeya Tyagi, Amit Kulkarni, Pallav Jha 2021-08-24 $92,089,000
11047334 Intake chamber air diffusing feature in an opposed-piston engine James R. Shaw 2021-06-29