Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5624748 | Packaging materials having barrier properties against oxygen | Hermann Seyffer, Eberhard Beckmann, Norbert Sendhoff | 1997-04-29 |
| 5604272 | Unsaturated sulfonic acid polymers as spray drying assistants | Gernot Franzmann, Maximilian Angel, Joachim Pakusch, Bernhard Schuler | 1997-02-18 |