Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679759 | Polycarbonate moulding materials with improved toughness | Dieter Wittmann, Thomas Eckel, Heinrich Alberts, Herbert Eichenauer | 1997-10-21 |
| 5674940 | ABS molding compounds with improved toughness | Herbert Eichenauer, Karl-Erwin Piejko | 1997-10-07 |