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USPTO Patent Rankings Data through Dec 31, 2025
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Chris Maifield — 1 Patent

JDJohn Deere: 1 patents #2,985 of 5,518Top 55%
Dubuque, IA: #361 of 571 inventorsTop 65%
Iowa: #8,818 of 15,303 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Chris Maifield has been granted 1 US patent while listed as an inventor at John Deere. All of these patents were granted in 2015. Chris Maifield ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Chris Maifield in Dubuque, IA, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9126598 Power management for infinitely variable transmission (IVT) equipped machines Jahmy Hindman, Eric R. Anderson, Christopher G Parish, Jeremiah J Bock, Daniel Pflieger +5 more 2015-09-08 $34,190,000