Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702613 | Polymers containing vinylamine/vinylformamide as demulsifiers in oily wastewaters | Ananthasubramanian Sivakumar | 1997-12-30 |
| 5622533 | Vinylamine copolymer coagulants for use in coal refuse dewatering | Krishnan J. Pillai | 1997-04-22 |