Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871520 | Process and composition for H.sub.2 S removal | Donald C. Olson, John J. Miller, Wayne R. Miller, Zaida Diaz | 1989-10-03 |
| 4861447 | Process for reducing corrosive impurities in sulfolane used for extracting aromatic hydrocarbons | Robert Knott | 1989-08-29 |
| 4810340 | Process for recovering organic values from aqueous solutions containing both organic values and scale-forming ions | Zaida Diaz | 1989-03-07 |