Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889637 | Scale control with terpolymers containing vinyl alcohol | Zahid Amjad | 1989-12-26 |
| 4885097 | Stabilization of metal ions with terpolymers containing styrene sulfonic acid | Zahid Amjad | 1989-12-05 |