ED

Edmund J. Piasek, deceased

S( Standard Oil Company (Indiana): 2 patents #142 of 576Top 25%
📍 Chicago, IL: #5,168 of 13,327 inventorsTop 40%
🗺 Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,356,057 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4425245 Benzene sulfonic acid modified aromatic Mannich products from alkyl phenols Paul J. Cahill, by Evelyn W. Hunt, administratrix 1984-01-10
4425249 Benzene sulfonic acid catalyzed aromatic Mannich products from alkyl phenols Paul J. Cahill, by Evelyn W. Hunt, administratrix 1984-01-10