Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888370 | Flame-resistant polyamides | Dieter Freitag, Thomas Joswig, Karsten-Josef Idel, Heinz-Josef Fullmann | 1989-12-19 |
| 4837276 | Phosphorus-containing oligomers and polymers containing polyphenylene ether blocks and mixtures of other plastics therewith | Karl Fuhr, Karl-Heinz Ott | 1989-06-06 |
| 4801632 | Cellulose ester moulding materials with improved toughness | Herbert Eichenauer, Christian Lindner, Hartwig Hocker, Helmut Keul | 1989-01-31 |