Issued Patents All Time
Showing 1–25 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7671118 | Stabilizer system for stabilizing halogen-containing polymers | Wolfgang Wehner | 2010-03-02 |
| 7612133 | Prestabilization of halogen-containing polymers | Karl-Josef Kuhn | 2009-11-03 |
| 7393887 | Stabilizer system for stabilizing halogen-containing polymers | Karl-Josef Kuhn, Wolfgang Wehner, Thomas Hopfmann | 2008-07-01 |
| 7358286 | Stabilizer system for stabilizing PVC | Thomas Hopfmann, Karl-Josef Kuhn, Wolfgang Wehner | 2008-04-15 |
| 7077981 | Chlorate-containing stabilizer system with nitrogen-containing synergists for stabilizing halogen-containing polymers | Wolfgang Wehner | 2006-07-18 |
| 6274654 | 1,3-Disubstituted 6-aminouracils for stabilizing halogenated polymers | Wolfgang Wehner, Markus Kolb | 2001-08-14 |
| 6232375 | 4-aminopyrimidinones and oxazolidino-4-aminopyrimidinones, process for their preparation and their use for stabilizing halogen-containing polymers | Wolfgang Wehner | 2001-05-15 |
| 6211270 | Cyanoacetylureas for stabilizing halogenated polymers | Wolfgang Wehner | 2001-04-03 |
| 6194494 | Stabiliser combinations for chlorine-containing polymers | Wolfgang Wehner, Kornelia Malzacher, Hans Mehner, Rolf Drewes | 2001-02-27 |
| 6174941 | NH2-modified 6-aminouracils as stabilizers for halogenated polymers | Wolfgang Wehner, Rolf Drewes | 2001-01-16 |
| 6156830 | 5-substituted 6-aminouracils as stabilizers for halogenated polymers | Wolfgang Wehner | 2000-12-05 |
| 6002004 | Pyrrolodiazine derivatives as stabilizers for chilorine-containing polymers | Wolfgang Wehner, Rolf Drewes | 1999-12-14 |
| 5925696 | Stabilizer combinations for chlorine-containing polymers | Wolfgang Wehner, Kornelia Malzacher, Hans Mehner, Rolf Drewes | 1999-07-20 |
| 5892051 | Additives for lubricants | Hermann O. Wirth | 1999-04-06 |
| 5859100 | Rigid PVC stabilised with N,N-dimethyl-6-aminouracils | Wolfgang Wehner, Rolf Drewes, Kornelia Malzacher | 1999-01-12 |
| 5770643 | Pyrrolodiazine derivatives as stabilizers for chlorine-containing polymers | Wolfgang Wehner, Rolf Drewes | 1998-06-23 |
| 5618778 | Additives for lubricants | Hermann O. Wirth | 1997-04-08 |
| 5550276 | Phosphonic acid derivatives and thionophosphonic acid derivatives | Hermann O. Wirth, Kay S. Groninger | 1996-08-27 |
| 5481039 | "Compositions comprising 2,2',2""-nitrilotriethanol cyclometalates" | Hermann O. Wirth | 1996-01-02 |
| 5380344 | "Compositions comprising 2,2',2""-nitrilotriethanol cyclometalates" | Hermann O. Wirth | 1995-01-10 |
| 5344992 | Process for the preparation of linear 1,3-diketones | Rolf Drewes, Hans Mehner, Bernd Braun, Walter Wecht | 1994-09-06 |
| 5322964 | Process for the preparation of alpha-aminoketone salts | Rolf Drewes | 1994-06-21 |
| 5288776 | Substituted pyrroles as stabilisers for chlorinated polymers | Rolf Drewes | 1994-02-22 |
| 5256323 | "Compositions containing 2,2',2""-nitrilotriethanol cyclometalates" | Hermann O. Wirth | 1993-10-26 |
| 5071898 | Propane-1,3-dione derivatives and their use as stabilizers for polymers containing chlorine | Hermann O. Wirth, Gerd Abeler | 1991-12-10 |