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John W. Sparapany

NC Nalco Chemical: 3 patents #6 of 95Top 7%
📍 Bolingbrook, IL: #1 of 39 inventorsTop 3%
🗺 Illinois: #161 of 4,484 inventorsTop 4%
Overall (1994): #11,832 of 165,921Top 8%
3
Patents 1994

Issued Patents 1994

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5346627 Method for removing metals from a fluid stream Kristine S. Siefert, Pek L. Choo, John H. Collins 1994-09-13
5338816 Hydrophobic polyelectrolytes used in removing color Manian Ramesh, Martha R. Finck, Kristine S. Siefert, Chandrashekar S. Shetty 1994-08-16
5283306 Hydrophobic polyelectrolytes used in removing color Manian Ramesh, Martha R. Finck, Kristine S. Siefert, Chandrashekar S. Shetty 1994-02-01