Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6482897 | Process for producing ABS moulding compositions having a high rubber content | Richard Weider, Gisbert Michels | 2002-11-19 |
| 5981644 | Method of producing ABS moulding compositions | Ralph Ostarek, Herbert Eichenauer, Karl-Erwin Piejko, Claus Wulff | 1999-11-09 |
| 4937286 | Thermoplastic moulding compositions | Klaus Summermann, Ulrich Jansen, Joachim Doring, Alfred Pischtschan | 1990-06-26 |
| 4866148 | Hydrophilic copolymers, the use thereof as biomedical materials and contact-optical articles produced therefrom | Otto-Christian Geyer | 1989-09-12 |
| 4795780 | Process for the preparation of binary .alpha.-methylstyrene/acrylonitrile resins by multi-stage bulk polymerization | Klaus Summermann, Gerd Wassmuth, Alfred Pischtschan, Joachim Doring | 1989-01-03 |
| 4703097 | Optical contact objects | Otto-Christian Geyer | 1987-10-27 |
| 4639473 | Thermoplastic moulding compositions | Otto Koch, Joachim Doering, Karl-Heinz Ott, Lothar Liebig | 1987-01-27 |
| 4631311 | Acrylonitrile free blends of a polycarbonate, a graft rubber and a terpolymer resin | Otto Koch, Christian Lindner, Klaus Reinking | 1986-12-23 |
| 4621117 | Acrylonitrile-free polycarbonate blends | Otto Koch, Christian Lindner, Klaus Reinking | 1986-11-04 |
| 4617089 | Apparatus for discharging high viscosity media in chemical engineering | Martin Ullrich, Manfred Hederich | 1986-10-14 |
| 4533397 | Use of polymer alloys based on cellulose esters in contact ophthalmics, and contact lenses produced from the polymer alloys | Helmut Waniczek, Otto-Christian Geyer | 1985-08-06 |
| 4532277 | Hydrophilized cellulose esters, process for their preparation, their use as biomedical materials and contact lenses produced from these | — | 1985-07-30 |
| 4472558 | Process for carrying out reactions caused by the transport of substances | Clemens Casper, Henning Klussmann, Gunter Lehr, Johannes O. Sajben, Artur Reischl +1 more | 1984-09-18 |
| 4384097 | Contact lenses of methyl methacrylate copolymers | Bernd Leusner, Peter Schwabe, Otto-Christian Geyer | 1983-05-17 |
| 4205140 | Thermoplastic moulding compositions | Lothar Liebig, Dieter Margotte, Werner Nouvertne | 1980-05-27 |
| 4205141 | Thermoplastic moulding compositions | Lothar Liebig, Gert Humme, Richard Prinz | 1980-05-27 |
| 4200713 | Process for the anionic homo- or co-polymerization of aromatic vinyl compounds | Clemens Casper, Lothar Liebig | 1980-04-29 |
| 4193897 | Contact lenses formed of mixtures of cellulose esters and ethylene/vinyl acetate copolymers | Theobald Eicher, Friedemann Muller, Winfried Fischer, Richard Prinz | 1980-03-18 |
| 4181788 | Process for the production of thermoplastic molding materials based on vinyl polymers | Lothar Liebig, Gerd Wassmuth, Martin Ullrich, Manfred Hederich | 1980-01-01 |