Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6737462 | Thermally stable, weather-resistant polyamide moulding compositions | Andreas Gittinger, Aziz El-Sayed, Ralf Lange | 2004-05-18 |
| 5965652 | Thermally stable copper-containing polyamide molding compounds | Aziz El Sayed, Alban Hennen, Georg Heger, Werner Nielinger, Karsten-Josef Idel +2 more | 1999-10-12 |
| 5645945 | Multi-layer films made from copolyamides | Werner Nielinger, Helmut Schulte, Bernhard Schulte | 1997-07-08 |
| 5605945 | Polyamide compounds containing diepoxide and having high viscosity | Aziz E. Sayed, Karsten-Josef Idel, Hubert Goldbach, Dieter L ohr, Ralf Lange | 1997-02-25 |
| 5597888 | Process for the production of high molecular weight polyamide 6 | Werner Nielinger, Andreas Gittinger, Karsten-Josef Idel, Helmut Schulte | 1997-01-28 |
| 5576377 | Polymer moulding materials for producing a partial color change by laser energy, particularly for the production of colored markings | Aziz El Sayed, Frank Gerling, Salvatore Messina, Herbert Magerstedt, Karsten-Josef Idel | 1996-11-19 |
| 5416143 | Highly flame-retardant polyamide moulding compounds | Aziz El Sayed, Karsten-Josef Idel, Dieter Freitag | 1995-05-16 |
| 5389712 | Difficultly flammable polyamide moulding materials | Aziz El Sayed, Karsten-Josef Idel, Dieter Freitag, Georg Heger | 1995-02-14 |
| 5378750 | Flame-retardant polyamide molding compounds | Aziz El Sayed, Karsten-Josef Idel | 1995-01-03 |
| 5242960 | Flameproofed non-drip polyamide molding compounds | Aziz El Sayed, Klaus Sommer, Hans G. Frohlen | 1993-09-07 |
| 5233037 | Production of caprolactam by thermal depolymerization of polyamide 6 | Werner Nielinger, Karsten-Josef Idel, Dieter Freitag, Hans-Josef Buysch | 1993-08-03 |
| 5118786 | Process for the preparation of high molecular weight, optionally branched polyarylene sulphides | Karsten-Josef Idel, Ludwig Bottenbruch | 1992-06-02 |
| 4900808 | Process for the production of high molecular weight, optionally branched polyarylene sulphides in polar solvent and lactam | Karsten-Josef Idel, Dieter Freitag | 1990-02-13 |
| 4889911 | Process for the production of fully aromatic, thermotropic polyesters and polyester carbonates | Harald Pielartzik, Wolfgang Ebert, Rolf-Volker Meyer, Hans-Joachim Traenckner | 1989-12-26 |
| 4886869 | Thermotropic aromatic polyester carbonates, a process for their preparation and their use | Harald Pielartzik, Rolf Dhein, Rolf-Volker Meyer, Hans-Joachim Traenckner | 1989-12-12 |
| 4824933 | Process for the preparation of copolyarylene sulphides with reduced crystallization temperature | Ernst-Ulrich Dorf | 1989-04-25 |
| 4794162 | Preparation of high molecular weight polyarylene sulfide with mixing of polyarylene sulfide with sulfur | Karl-Herbert Fritsch | 1988-12-27 |
| 4786712 | Process for the preparation of optionally branched polyarylene sulphides having reduced corrosiveness with ketone diluent and organic solvent | Karsten-Josef Idel, Rolf-Volker Meyer | 1988-11-22 |
| 4762911 | Process for the preparation of high-molecular, optionally branched polyarylene sulphide with sodium sulfide, potassium sulfide and hydrogen sulfide | Karsten-Josef Idel, Ludwig Bottenbruch | 1988-08-09 |
| 4732967 | Polyarylene sulphide having high melt viscosity | Karsten-Josef Idel, Dieter Freitag, Wolfgang Alewelt | 1988-03-22 |
| 4665156 | Mono- and biaxially drawable film of polyphenylene sulphide | Klaus Reinking, Karsten-Josef Idel | 1987-05-12 |
| 4663430 | Process for the preparation of high molecular weight polyarylene sulphide in the absence of water | Karsten-Josef Idel | 1987-05-05 |
| 4661584 | Preparation of polyarylene sulphide in presence of amino carboxylic acid | Karsten-Josef Idel, Dieter Freitag, Wolfgang Alewelt | 1987-04-28 |
| 4631336 | Process for the production of high molecular weight, optionally branched polyarylene sulphide with an ester or anhydride of a carboxylic acid | Karsten-Josef Idel, Dieter Freitag | 1986-12-23 |
| 4598144 | Process for the production of high molecular weight, optionally branched polyarylene sulphides | Karsten-Josef Idel, Wolfgang Eisermann, Dieter Freitag | 1986-07-01 |