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

David C. Freeman — 5 Patents

Caterpillar: 3 patents #2,186 of 8,398Top 30%
Ford: 2 patents #6,478 of 17,473Top 40%
MIT: 1 patents #4,386 of 9,367Top 50%
Chillicothe, IL: #59 of 214 inventorsTop 30%
Illinois: #18,025 of 84,256 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
David C. Freeman has been granted 5 US patents while listed as an inventor at Caterpillar. The first was granted in 2008 and the most recent in November 2016. David C. Freeman ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list David C. Freeman in Chillicothe, IL, US.

Patents per Year

Patents granted per year, 2008 to 2016Bar chart with a peak of 1 patents in 2008.peak 12008: 1 patents20082011: 1 patents20112012: 1 patents20122013: 1 patents20132016: 1 patents2016

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9486825 Control system for mobile fluid delivery machine Khanh Ngo, Peter W. Anderton, Balamurugesh Thirunavukarasu 2016-11-08 $25,104,000
8405500 System and method for power and data delivery on a machine Bryan G. Lammers, James I. Portscheller, Paul G. Casperson, John W. Crayton 2013-03-26 $80,881,000
8089345 System and method for power and data delivery on a machine Darrel Berglund, Daniel K. Dunn, John W. Crayton 2012-01-03 $148,901,000
7938107 Variable stiffness flow control valve Alexander H. Slocum, Daniel Michael Kabat 2011-05-10 $182,877,000
7370645 Variable stiffness flow control valve Alexander H. Slocum, Daniel Michael Kabat 2008-05-13 $22,318,000