Issued Patents All Time
Showing 26–50 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6013703 | Stabilizer combination for chlorine-containing polymers | Karl-Josef Kuhn, Horst Zinke | 2000-01-11 |
| 6002004 | Pyrrolodiazine derivatives as stabilizers for chilorine-containing polymers | Hans-Helmut Friedrich, Rolf Drewes | 1999-12-14 |
| 5969015 | Monomeric and oligomeric bisphosphites as stabilisers for polyvinyl chloride | Horst Zinke, Karl-Josef Kuhn | 1999-10-19 |
| 5925696 | Stabilizer combinations for chlorine-containing polymers | Hans-Helmut Friedrich, Kornelia Malzacher, Hans Mehner, Rolf Drewes | 1999-07-20 |
| 5859100 | Rigid PVC stabilised with N,N-dimethyl-6-aminouracils | Hans-Helmut Friedrich, Rolf Drewes, Kornelia Malzacher | 1999-01-12 |
| 5814691 | Stabilized polyvinyl chloride | Karl-Josef Kuhn | 1998-09-29 |
| 5804622 | Monomeric N-piperidinylmelamines as stabilizers for chlorine-containing polymers | Horst Zinke, Karl-Josef Kuhn, Valerio Borzatta, Gerhard Rytz | 1998-09-08 |
| 5770643 | Pyrrolodiazine derivatives as stabilizers for chlorine-containing polymers | Hans-Helmut Friedrich, Rolf Drewes | 1998-06-23 |
| 5543449 | Stabilized flexible PVC | Rolf Drewes, Markus Kolb, Karl-Josef Kuhn, Hans Sander | 1996-08-06 |
| 5534566 | Stabilized halogen-containing polymers | Rolf Drewes, Karl-Josef Kuhn, Hans Sander, Markus Kolb | 1996-07-09 |
| 5519077 | Stabilized polyvinyl chloride | Rolf Drewes, Markus Kolb, Karl-Josef Kuhn, Hans Sander | 1996-05-21 |
| 5492949 | Stabilized polyvinyl chloride | Rolf Drewes, Markus Kolb, Karl-Josef Kuhn | 1996-02-20 |
| 5350785 | Stabilized chlorine-containing polymer compositions | Hans Sander, Olaf Hartmann, Hermann O. Wirth | 1994-09-27 |
| 5272192 | Melamine derivatives as stabilizers for chloride-containing polymers | Hans-Gunter Kostler | 1993-12-21 |
| 5177135 | .beta.-keto esters as stabilizers for chlorinated polymers | Hermann O. Wirth | 1993-01-05 |
| 5155152 | Substitute aminopyrroles as stabilizers for chlorine-containing polymers | Hermann O. Wirth | 1992-10-13 |
| 5118346 | Biocidally active compounds | Joachim Lorenz, Reinhardt Grade | 1992-06-02 |
| 5030671 | Mercaptobenzoates as stabilizers for chlorine-containing polymers | Gerd Abeler | 1991-07-09 |
| 4786672 | Anilinotriazines and the use thereof | — | 1988-11-22 |
| 4727104 | Novel triazole derivatives and the use thereof for stabilizing organic polymers | Klaus-Peter Michaelis, Rainer Schneider | 1988-02-23 |
| 4656209 | Chlorinated thermoplastics stabilized with aminouracils | Hermann O. Wirth | 1987-04-07 |
| 4642322 | Stabilization of chlorine-containing thermoplastics with nitrogen-containing organic compounds | Horst Muller, Rainer Schneider | 1987-02-10 |
| 4639482 | Phosphoric acid compounds as co-stabilizers for Me(II)-carboxylates and/or Me(II)-phenolates in PVC | Horst Muller, Horst Zinke | 1987-01-27 |
| 4578489 | Ammonium stannates-(IV) | Reinhardt Grade | 1986-03-25 |
| 4554367 | Phosphonium organohalogenostannates-IV | Reinhardt Grade | 1985-11-19 |