Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880553 | Methylene linked aromatic pour point depressant | Syed Q. A. Rizvi | 1989-11-14 |
| 4789402 | Mannich reaction product as asphalt antistripping agent | — | 1988-12-06 |
| 4753745 | Methylene linked aromatic pour point depressant | Syed Q. A. Rizvi | 1988-06-28 |