RP

Ralph A. Powell

EX ExxonMobil: 1 patents #5,661 of 10,161Top 60%
Overall (All Time): #3,970,865 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4652684 Vanillin extraction process using large pore, high silica/alumina ratio zeolites Eric G. Derouane 1987-03-24