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

Richard S. Lehner — 3 Patents

Pfizer: 4 patents #1,262 of 5,153Top 25%
New London, CT: #19 of 100 inventorsTop 20%
Connecticut: #12,311 of 34,797 inventorsTop 40%
Overall (All Time): #1,607,151 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6825327 Process for preparing 4″-substituted-9-deoxo-9a-aza-9a-homoerythromycin a derivatives Constantine Sklavounos, John Tucker, Lulin Wei, Kerry P. Mahon, Philip D. Hammen +1 more 2004-11-30
6476040 Processes and intermediates for preparing anti-cancer compounds Timothy Norris, Dinos P. Santafianos 2002-11-05
5380860 Preparation of beta-ketoesters useful in preparing quinolone antibiotics Frank R. Busch, Brian Thomas O'Neill 1995-01-10