Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
FR

Francois Ruffenach

ONOnduline: 2 patents #1 of 24Top 5%
Rouen, FR: #56 of 223 inventorsTop 30%
Overall (All Time): #1,998,850 of 4,157,543Top 50%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9249541 Method of making a roof-covering element out of compression molded plant fibers impregnated with bitumen, and roof-covering element, in particular a ridge element, a fillet, a curb, or a hip Michel Thomas, Melih Kamil, Martin Foutel 2016-02-02
6173237 Optimization process of a bitumen/polymers mixture 2001-01-09