Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5105004 | Aromatic ethers | Knud Reuter, Dieter Freitag, Gunther Weymans, Rolf Dhein, Karsten-Josef Idel +2 more | 1992-04-14 |
| 5021543 | Process for the production of bifunctional OH-terminated polyphenylene oxides with dipolar aprotic solvent | Volker Eckhardt, Dieter Freitag, Karsten-Josef Idel | 1991-06-04 |
| 4981919 | End capped thermally stable polyphenylene oxide (PPO) | Ludwig Bottenbruch, Hans-Rudolf Dicke | 1991-01-01 |
| 4804689 | Process for holding and foaming thermoplastic polyphenylene sulphide articles and the resultant products | Erhard Tresper | 1989-02-14 |
| 4775738 | Process for the preparation of polyether-sulphones | Erhard Tresper | 1988-10-04 |
| 4482693 | Polyphosphates and the production thereof | Volker Serini, Hans-Dieter Block, Dieter Freitag | 1984-11-13 |