Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6376107 | Electroluminescent arrangement using doped blend systems | Helmut-Werner Heuer, Rolf Wehrmann, Martin Deussen, Martin Hüppauff | 2002-04-23 |
| 6368731 | Electroluminescent assemblies using boron chelates of 8-aminoquinoline derivatives | Helmut-Werner Heuer, Rolf Wehrmann | 2002-04-09 |
| 6316130 | Electroluminescent assemblies using azomethine-metal complexes | Helmut-Werner Heuer, Rolf Wehrmann | 2001-11-13 |
| 6294273 | Electroluminescent assemblies containing N-alkyl-2,2'-imino-bis-(8-hydroxy-quinoline)-metal complexes | Helmut-Werner Heuer, Rolf Wehrmann | 2001-09-25 |
| 6287713 | Electroluminescent assemblies containing boron chelates | Helmut-Werner Heuer, Rolf Wehrmann | 2001-09-11 |
| 6277504 | EL assembly based on tertiary amines, Alq3 derivatives or mixtures soluble in alcohol and polymeric binders | Friedrich Koch, Helmut-Werner Heuer, Rolf Wehrmann, Martin Deussen | 2001-08-21 |
| 6248457 | Copolymers based on vinyl units and use thereof in electroluminescent devices | Yun Chen, Rolf Wehrmann, Ralf Dujardin | 2001-06-19 |
| 6114463 | Copolymers based on vinyl units and their use in electroluminescent devices | Yun Chen, Burkhard Kohler, Rolf Wehrmann, Ralf Dujardin | 2000-09-05 |
| 6083635 | Conductive coatings | Friedrich Jonas, Alexander Karbach, Bavo Muys, Etienne Thillo, Rolf Wehrmann +1 more | 2000-07-04 |
| 6075106 | (Co)polymers based on vinyl units and use thereof in electroluminescent devices | Yun Chen, Burkhard Kohler, Rolf Wehrmann, Ralf Dujardin | 2000-06-13 |
| 5917279 | Intermediate layer in electroluminescent arrangements containing finely divided inorganic particles | Rolf Wehrmann, Kai Butje | 1999-06-29 |
| 5905128 | (CO) polymers based on vinyl units and use thereof in electroluminescent arrangements | Yun Chen, Rolf Wehrmann, Ralf Dujardin | 1999-05-18 |
| 5891975 | (Co)polymers based on vinyl units and use thereof in electroluminescent devices | Yun Chen, Burkhard Kohler, Rolf Wehrmann, Ralf Dujardin | 1999-04-06 |
| 5874180 | Electroluminescent arrangements and their use | Rolf Wehrmann, Siegfried Thurm, Hans J. Rosenkranz, Ralf Dujardin | 1999-02-23 |
| 5807945 | (Co)polymers based on vinyl units and use thereof in electroluminescent arrangements | Yun Chen, Rolf Wehrmann, Ralf Dujardin | 1998-09-15 |
| 5766515 | Conductive coatings | Friedrich Jonas, Alexander Karbach, Bavo Muys, Etienne Van Thillo, Rolf Wehrmann +1 more | 1998-06-16 |
| 5552226 | Process for pretreating surfaces of plastic items | Siegfried Thurm, Klaus Sommer, Peter Bier, Manfred Kowitz, Axel Sandquist | 1996-09-03 |
| 5487810 | Process for pretreating surfaces of plastic items | Siegfried Thurm, Klaus Sommer, Peter Bier, Manfred Kowitz, Axel Sandquist | 1996-01-30 |