DP

David S. Pietrewicz

ET Ethyl: 1 patents #298 of 494Top 65%
Overall (All Time): #2,305,558 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5264474 Polymer compositions Robert A. Schleifstein 1993-11-23
4957957 Polymer compositions containing aromatic sulfonamide Robert A. Schleifstein 1990-09-18