Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867882 | Method for reducing the amount of anionic metal ligand complex in a solution | Gary A. O'Neill, Abraham S. C. Chen | 1989-09-19 |
| 4822592 | Producing alpha alumina particles with pressurized acidic steam | — | 1989-04-18 |