Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6727370 | Method for preparing oxydiphthalic anhydrides using bicarbonate as catalyst | Daniel J. Brunelle | 2004-04-27 |
| 6706897 | Method for preparing oxydiphthalic anhydrides using guanidinium salt as catalyst | Daniel J. Brunelle | 2004-03-16 |