Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373081 | Polyether ketones and polyether sulfones based on phenylindane, and the use thereof for optical systems | Dazhong Yang, Oskar Nuyken, Michael-Joachim Brekner, Freddy Helmer-Metzmann | 1994-12-13 |
| 5327017 | Circuit arrangement for switching of RF signals | Bertram Fischer | 1994-07-05 |
| 5300625 | Heteroaromatic polyether | Brigitte Helmreich, Klaus Burger, Reinhold Hecht, Oskar Nuyken | 1994-04-05 |
| 5270579 | Circuit arrangement for generating an inverse voltage for switching diodes | Bertram Fischer | 1993-12-14 |
| 4969050 | Circuit arrangement for distributing an antenna signal to two appliances | Bertram Fischer | 1990-11-06 |
| 4956711 | Automatic balancing system for communications receiver apparatus | — | 1990-09-11 |
| 4920455 | Radio frequency device circuit arrangement | Betram Fischer | 1990-04-24 |
| 4903721 | Fuel pressure regulator | — | 1990-02-27 |
| 4893288 | Audible antenna alignment apparatus | Veit Armbruster | 1990-01-09 |
| 4852536 | Trigger system for ignition system for internal combustion engines | David L. Enlow, Paul Ng | 1989-08-01 |
| 4779581 | Dual fuel injection system for two stroke internal combustion engine | — | 1988-10-25 |
| 4736456 | Tuning system for television sets | — | 1988-04-05 |
| 4731876 | VHF mixer circuit with band dependent switching | Bertram Fischer, Erich Kirschner | 1988-03-15 |
| 4689825 | Receiver stage for radio or television receiver | Erich Geiger | 1987-08-25 |
| 4685150 | Tuning of a resonant circuit in a communications receiver | — | 1987-08-04 |
| 4614969 | Process for manufacturing an endless tubular felt and apparatus for implementing the process | Sebastian Gerundt, Rolf Guse, Walter Halterbeck, Gunter Hollenberg, Karl-Heinz Muller | 1986-09-30 |
| 4604571 | Circuit for the determination of voltage extrema | Joachim Lange | 1986-08-05 |
| 4596045 | Input circuit for television receiver | — | 1986-06-17 |
| 4590611 | Tuner for communications equipment | Joachim Lange | 1986-05-20 |
| 4260113 | Process and apparatus for the production of constituents of particle board panels | Udo Rosenke, Manfred Humbert, Walter Ritter | 1981-04-07 |