Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882140 | Solid aluminum hydroxide compositions | — | 1989-11-21 |
| 4826606 | Manufacture and use of polymer modified aluminum hydroxide and basic aluminum sulfate | John B. Lukas | 1989-05-02 |
| 4795585 | Polyvinyl alcohol containing polyaluminum chloride flocculants | — | 1989-01-03 |