Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656221 | Process for direct production of low acetaldehyde packaging material | Heinz-Dieter Schumann | 1997-08-12 |
| 5656716 | Titanium-containing catalyst and process for the production of polyester | Wolfgang Schmidt, Wolf-Dieter Griebler, Bernd Hirthe, Elke Hirschberg | 1997-08-12 |