Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6417256 | Polycarbonate-ABS moulding materials | Thomas Eckel, Dieter Wittmann, Richard Weider, Gisbert Michels | 2002-07-09 |
| 6239225 | Process for the manufacture of impact resistant modified polymers | Gisbert Michels, Bernd Klinksiek, Otto Schmid, Richard Weider, Raymond D. Burk +1 more | 2001-05-29 |
| 6034169 | Mixtures of aqueous polymer dispersions | Reiner Witkowski, Otto Ganster, Heinrich Konigshofen | 2000-03-07 |
| 5981644 | Method of producing ABS moulding compositions | Herbert Eichenauer, Karl-Erwin Piejko, Frank Wingler, Claus Wulff | 1999-11-09 |
| 5266642 | Process for the preparation of alpha-methylstyrene polymers | Karl-Erwin Piejko, Christian Lindner | 1993-11-30 |
| 5225465 | Process for working up stabilized ABS polymers with recovery of unreacted monomers | Herbert Eichenauer, Ulrich Jansen, Otto Koch, Karl-Heinz Ott | 1993-07-06 |
| 5112910 | Mixtures of thermoplastic polymers in powder form | Karl-Erwin Piejko, Christian Lindner, Hans-Eberhard Braese, Karl-Heinz Ott | 1992-05-12 |
| 4801669 | Process for the quasi-ionic polymerization of acrylic acid derivatives | Karl-Erwin Piejko, Manfred T. Reetz | 1989-01-31 |
| 4626579 | Process for the quasi-ionic polymerization of acrylic acid derivatives | Manfred T. Reetz, Karl-Erwin Piejko | 1986-12-02 |