Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5175355 | Improved process for recovery of purified terephthalic acid | Debra J. Streich, Sandra K. Schiller, Roger J. Grimm | 1992-12-29 |
| 5118838 | By-product recovery when oxidizing polymethylbenzenes to polycarboxylic acids | Martin A. Zeitlin, David Hacker, Kristi A. Fjare, Stacey L. Kissinger | 1992-06-02 |
| 5081290 | Process for making aromatic polycarboxylic acids and oxidation catalyst system | Walter Partenheimer | 1992-01-14 |