Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679848 | Process for the preparation of terephthalic acid and its isomers | Anton Schoengen, Christoph Schwarz, Thomas Jostmann | 1997-10-21 |
| 5614159 | Process for the purification of an oxidation off gas with energy recovery | Rudolf Modic, Anton Schoengen, Johann H. Schroeder, J org Porschen | 1997-03-25 |