Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826576 | Separation of isopropyl acetate from isopropanol by extractive distillation | Lloyd Berg | 1989-05-02 |
| 4822947 | Separation of m-xylene from o-xylene by extractive distillation with DMSO | Lloyd Berg | 1989-04-18 |