Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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David G. Lammel — 2 Patents

Chevron: 2 patents #1,772 of 4,788Top 40%
Orinda, CA: #276 of 531 inventorsTop 55%
California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,300,150 of 4,157,543Top 60%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5232577 Hydrocracking process with polycyclic aromatic dimer removal John C. Fetzer, John M. Rosenbaum, Robert W. Bachtel, Dennis R. Cash 1993-08-03
5190633 Hydrocracking process with polynuclear aromatic dimer foulant adsorption John C. Fetzer 1993-03-02