Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Bernard J. Challen — 1 Patent

TITiax: 1 patents #18 of 71Top 30%
Warwick, GB: #135 of 265 inventorsTop 55%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Bernard J. Challen has been granted 1 US patent while listed as an inventor at Tiax. All of these patents were granted in 2005. Bernard J. Challen ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Bernard J. Challen in Warwick, GB.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6953024 Method of controlling combustion in a homogeneous charge compression ignition engine Jan-Roger Linna, Robert Bowyer, John Paul Mello, Peter Palmer, Richard Stobart 2005-10-11