Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11673130 | Catalyst system containing a metathesis catalyst and at least one phenolic compound and a process for metathesis of nitrile-butadiene rubber (NBR) using the catalyst system | Karola Schneiders, Karsten Knebel, Volker Wege | 2023-06-13 |
| 8097751 | Process for preparing polyisocyanates by the adiabatic phosgenation of primary amines | Daniel Koch, Spotswood Miller, Ricardo Serra, Dietmar Wastian, Gerhard Wegener | 2012-01-17 |
| 7384576 | Lead-free mixture as a radiation protection additive | Hardy Jüngermann, Heinz Pudleiner, Burkhard Werden, Edgar Leitz, Detlev Joachimi +10 more | 2008-06-10 |
| 6617039 | Nitrogen-free compounds as adhesion promoters for silicon-based scratch-resistant coatings on polycarbonate | Michael Mager, Steffen Hofacker | 2003-09-09 |
| 5856012 | Process for the production of multilayer plastic sheets | Steffen Kuhling, Hartmut Lower, Siegfried Anders, Werner Verhoeven | 1999-01-05 |
| 5780690 | Bisphenol synthesis on modified ion-exchange resins using specially purified carbonyl compounds | Klaus Berg, Gerhard Fennhoff, Ralf Pakull, Hans-Josef Buysch, Bernhard Wehrle +2 more | 1998-07-14 |
| 5750602 | Flameproofed polycarbonate/ABS blends resistant to stress cracking | Burkhard Kohler, Richard Weider, Dieter Wittmann, Horst Beicher | 1998-05-12 |
| 5525674 | Polycarbonates with aliphatic ketocarboxyl end groups, mixed with known aromatic polycarbonates, their preparation and their use | Wolfgang Ebert, Burkhard Kohler, Klaus Horn, Richard Weider, Thomas Scholl +2 more | 1996-06-11 |
| 5410014 | Method of preparing aliphatic-aromatic polycarbonates | Wilfried Haese, Ralf Pakull, Gerhard Fennhoff | 1995-04-25 |
| 5407966 | Recyclable thermoplastic foam with a high glass transition temperature II | Wolfgang Ebert, Wolfgang Beer, Burkhard Kohler, Rolf Dhein, Klaus Horn | 1995-04-18 |
| 5408027 | Process for the production of aliphatic-aromatic polycarbonates | Wilfried Haese, Ralf Pakull, Gerhard Fennhoff | 1995-04-18 |
| 5376715 | Heat stabilization or aromatic polycarbonates | Gerhard Fennhoff, Karsten-Josef Idel, Klaus Kircher, Charles E. Lundy | 1994-12-27 |
| 5357028 | Method of preparing polycarbonates and polyester carbonates | Ralf Pakull, Gerhard Fennhoff, Werner Struver | 1994-10-18 |
| 5334692 | Highly branched polyphosphonates based on melamine | Bernhard Hess, Wolfgang Schulz-Schlitte, Dieter Freitag, Uwe Arndt, Hans-Georg Gehrke +1 more | 1994-08-02 |
| 5326800 | Use of salts in combination with halogenated phthalimides for flameproof finishing of glass fibre-containing polycarbonate moulded members | Klaus Horn, Richard Weider, Hugo Obermann, Dieter Freitag, Karsten-Josef Idel | 1994-07-05 |
| 5310793 | Mixtures of polyalkylene terephthalates, new polycarbonates and/or polyester-carbonates and elastomers | Dieter Freitag, Karsten-Josef Idel, Gerd Fengler, Ulrich Grigo, Uwe Westeppe | 1994-05-10 |
| 5300543 | Recyclable thermoplastics foam of high glass temperature | Wolfgang Ebert, Burkhard Kohler, Wolfgang Beer, Siegfried Anders, Rolf Dhein | 1994-04-05 |
| 5298546 | Thermoplastic molding compounds of polyalkylene terephthalate, special barium sulfate, particulate graft polymers and, optionally, reinforcing materials | Karl-Erwin Piejko, Christian Lindner, Karsten-Josef Idel, Hans-Georg Gehrke | 1994-03-29 |
| 5296528 | Compatible polymer blends with thermoplastic polycarbonates | Holger Lutjens, Karl-Erwin Piejko, Rudiger Plaetschke, Christian Lindner | 1994-03-22 |
| 5274009 | Use of nuclear aromatic sulfonic acid esters for stabilizing thermoplastic polycarbonates against the effect of gamma-rays | Ulrich Grigo, Karsten-Josef Idel, Charles E. Lundy | 1993-12-28 |
| 5258484 | Process for the production of polycarbonate | Reinhard Schomacker, Uwe Hucks, Gunther Weymans, Wolfgang Herrig | 1993-11-02 |
| 5252674 | Thermoplastic graft polymers containing oxetanyl groups | Karl-Erwin Piejko, Christian Lindner, Gerd Fengler, Hans-Eberhard Braese | 1993-10-12 |
| 5250658 | Isolation of polycarbonate with carbon dioxide | Hanns-Ingolf Paul, Rolf Treckmann, Gunther Weymans, Wolfgang Herrig | 1993-10-05 |
| 5248763 | Isolation of poly(ester)carbonates from methylene chloride using carbon dioxide fluid | Gunther Weymans, Dieter Freitag | 1993-09-28 |
| 5231124 | Stabilized thermoplastic molding compositions | Karsten-Josef Idel, Friedemann Paul, Lothar Meier, Hans-Georg Gehrke | 1993-07-27 |