Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6133414 | Decomposing polymers using NOR-HALS compounds | Rudolf Pfaendner, Kurt Hoffmann, Raymond Seltzer, Matthew E. Gande | 2000-10-17 |
| 6077891 | Stabilization of damaged thermoplastics | Kurt Hoffmann, Rudolf Pfaendner | 2000-06-20 |
| 6028129 | Increasing the molecular weight of polycondensates and stabilizing them, using diepoxides of sterically hindered amines | Rudolf Pfaendner, Alfred Steinmann, Kurt Hoffmann | 2000-02-22 |
| 6025463 | Increasing the molecular weight of polyamides | Rudolf Pfaendner, Kurt Hoffmann | 2000-02-15 |
| 5985964 | Stabilized polyvinyl chloride containing recycled material | Kurt Hoffmann, Rudolf Pfaendner, Rolf Drewes | 1999-11-16 |
| 5859102 | Process for the stabilization of and stabilizer mixtures for PVDC-containing polyolefin mixtures | Rudolf Pfaendner, Kurt Hoffmann | 1999-01-12 |
| 5859073 | Polyester/polycarbonate blends having enhanced properties | Rudolf Pfaendner, Kurt Hoffmann | 1999-01-12 |
| 5807966 | Increase in molecular weight of polycondensates | Rudolf Pfaendner, Kurt Hoffmann | 1998-09-15 |
| 5807932 | Increasing the molecular weight of polycondensates | Rudolf Pfaendner, Kurt Hoffmann | 1998-09-15 |
| 5804623 | Process for the stabilization of and stablizer mixtures for recycled plastics | Kurt Hoffmann, Rudolf Pfaendner, Hans Sander, Franciszek Sitek | 1998-09-08 |
| 5789470 | Stabilized recycled plastics | Kurt Hoffmann, Franca Masina, Rudolf Pfaendner, Franciszek Sitek | 1998-08-04 |
| 5756596 | Increasing the molecular weight of polyamides | Rudolf Pfaendner, Kurt Hoffmann | 1998-05-26 |
| 5747606 | Increasing the molecular weight of polyesters and premix useful for this process | Rudolf Pfaendner, Kurt Hoffmann | 1998-05-05 |
| 5744554 | Polyester/polycarbonate blends having enhanced properties | Rudolf Pfaendner, Kurt Hoffmann | 1998-04-28 |
| 5726234 | Stabilized PVDC-containing PVC | Kurt Hoffmann, Rudolf Pfaendner | 1998-03-10 |
| 5693681 | Increasing the molecular weight of polyesters | Rudolf Pfaendner, Kurt Hoffmann | 1997-12-02 |
| 5643985 | Process for the stabilization of and stabilizer mixtures for recycled plastics | Kurt Hoffmann, Rudolf Pfaendner, Hans Sander, Franciszek Sitek | 1997-07-01 |
| 5496920 | Increasing the molecular weight of polyamides | Rudolf Pfaendner, Kurt Hoffmann | 1996-03-05 |