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

Christopher J. Maifield — 4 Patents

JDJohn Deere: 4 patents #1,212 of 5,518Top 25%
Dubuque, IA: #165 of 571 inventorsTop 30%
Iowa: #3,794 of 15,303 inventorsTop 25%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Christopher J. Maifield has been granted 4 US patents while listed as an inventor at John Deere. The first was granted in 2007 and the most recent in October 2017. Christopher J. Maifield ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Christopher J. Maifield in Dubuque, IA, US.

Patents per Year

Patents granted per year, 2007 to 2017Bar chart with a peak of 1 patents in 2007.peak 12007: 1 patents20072011: 1 patents20112014: 1 patents20142017: 1 patents2017

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9797114 Work vehicle operator control with increment adjust Nathan J. Horstman, Giovanni A. Wuisan, Ronald J. Huber 2017-10-24 $64,895,000
D705163 Motor grader rear section housing John C. Lauper, Jesse J. Stanton, Thomas H. Ward, Michael Trump, Joseph B. Fochs 2014-05-20
8070651 Work machine coast and brake control with an infinitely variable transmission Briton T. Eastman 2011-12-06 $17,812,000
7204329 Under-hood engine air intake system Jesse Lee Pfohl, Douglas G. Meyer, Daniel Joseph Huegerich, Gregory K. Werner 2007-04-17 $25,426,000