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

David Lambert — 7 Patents

RLRaytec Limited: 2 patents #1 of 14Top 8%
LYLydall: 1 patents #15 of 62Top 25%
TLTorotrak (Development) Limited: 1 patents #17 of 34Top 50%
UFUS Air Force: 1 patents #6,232 of 16,312Top 40%
CUCummins: 1 patents #2,191 of 2,217Top 100%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
David Lambert has been granted 7 US patents while listed as an inventor at Raytec Limited. The first was granted in 1994 and the most recent in December 2025. David Lambert ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list David Lambert in Ashington, NH, GB.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12509829 Reflective road marker 2025-12-30
10677175 Ventilation controls for dual-fuel engines Robert J. Thomas 2020-06-09 $42,934,000
9388950 Illumination beam adjustment apparatus and illumination apparatus Shaun Lee Cutler, Anthony Gerard Whiting 2016-07-12
8041664 Supervisory control by non-humans 2011-10-18
7529478 Adaptive illumination lighting system Shaun Lee Cutler, Tony Whiting 2009-05-05
5595659 Filter material for removing chlorine from cold water in preparing a human-consumable beverage Ming T. Huang, Robert F. GATTA, Kevin G. LYNCH 1997-01-21 $2,593,000
5308298 Hydraulic control systems 1994-05-03