Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5296522 | Electrical medium and high voltage cable with a cable sheath having high resistance to the formation and the growth of water trees | Heinz Vogt, Ingolf Hennig, Thomas Muehlenbernd | 1994-03-22 |
| 5283120 | Electric cables which contain insulations based on ethylene polymers having high resistance to the formation of water trees | Ernst Koehnlein, Heinz Vogt, Thomas Muehlenbernd, Hans-Henning Hub | 1994-02-01 |
| 5047482 | Cable insulation based on ethylene polymers having high resistance to the formation of water trees | Ernst Koehnlein, Peter Bauer, Ludwig Koessler | 1991-09-10 |
| 4997713 | Electric cables which contain insulations based on ethylene polymers having high resistance to the formation of water trees | Ernst Koehnlein, Heinz Vogt, Peter Bauer, Alfred F. Hauss | 1991-03-05 |
| 4876147 | Cable insulation based on ethylene polymers having high resistance to the formation of water trees | Ernst Koehnlein, Peter Bauer, Ludwig Koessler, Alfred F. Hausz | 1989-10-24 |
| 4655964 | Conductive nylon molding materials | Rolf Steinberger, Karl Schlichting, Erhard Seiler, Sibylle Von Tomkewitsch, Hans-Friedrich Schmidt | 1987-04-07 |
| 4640749 | Electrically conductive pyrrole copolymers and their preparation | Herbert Naarmann, Gernot Koehler | 1987-02-03 |
| 4587037 | Pyrrole polymers as electrical heating elements | Helmut Munstedt, Helmut Gebhard, Herbert Naarmann | 1986-05-06 |
| 4532188 | Electrically conductive pyrrole copolymer article | Herbert Naarmann, Gernot Koehler | 1985-07-30 |
| 4468291 | Continuous production of polypyrrole films | Herbert Naarmann, Gernot Kohler | 1984-08-28 |
| 4412942 | Preparation of electrically conductive polymers | Herbert Naarmann, Klaus Penzien, Petr Simak | 1983-11-01 |
| 4411826 | Preparation of stable electrically conductive polymers | Herbert Naarmann, Klaus Penzien, Petr Simak | 1983-10-25 |
| 4407739 | Preparation of electrically conductive polymers | Herbert Naarmann, Klaus Penzien | 1983-10-04 |
| 4401545 | Electrically conductive polypyrrole derivatives | Herbert Naarmann, Dieter Naegele, Klaus Penzien, Volker Kiener, Hugo Boehm | 1983-08-30 |
| 4395497 | Preparation of electrically conductive soluble heteropolyphenylenes | Herbert Naarmann, Dieter Naegele, Klaus Penzien | 1983-07-26 |
| 4360644 | Preparation of electrically conductive polyaromatics | Herbert Naarmann, Dieter Naegele, Klaus Penzien | 1982-11-23 |
| 4340507 | Preparation of electrically conductive polyaromatics, and their use in the electrical industry and for rendering plastics antistatic | Herbert Naarmann, Dieter Naegele, Klaus Penzien | 1982-07-20 |