Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864036 | Process for preparing aromatic carboxylic anhydride | Isreal E. Wachs | 1989-09-05 |
| 4835126 | Process for preparing a catalyst for the preparation of a carboxylic anhydride | Israel E. Wachs | 1989-05-30 |
| 4831164 | Process of preparing carboxylic anhydride | Israel E. Wachs | 1989-05-16 |
| 4814317 | Process for preparing catalysts for preparation of aromatic carboxylic anhydrides | Israel E. Wachs | 1989-03-21 |