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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Douglas E. Handly — 2 Patents

Caterpillar: 2 patents #2,997 of 8,398Top 40%
Morton, IL: #109 of 245 inventorsTop 45%
Illinois: #34,875 of 84,256 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Douglas E. Handly has been granted 2 US patents while listed as an inventor at Caterpillar. The first was granted in 2002 and the most recent in June 2005. Douglas E. Handly ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Douglas E. Handly in Morton, IL, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6907851 Engine valve actuation system Travis E. Barnes, Judson R. Bruce, Sean O. Cornell, Scott Leman, David M. Milam +2 more 2005-06-21 $49,261,000
6484696 Model based rail pressure control for variable displacement pumps Travis E. Barnes, Michael S. Lukich, David M. Milam, George M. Matta, Denis El Darazi +2 more 2002-11-26 $9,346,000