Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7477590 | Optical recording medium having at least two recordable layers | Hartmut Richter | 2009-01-13 |
| 7106687 | Optical recording medium having at least two recordable layers | Hartmut Richter | 2006-09-12 |
| 6396797 | Recording or reproducing unit with means for compensating the unbalance of plate-shaped information media | Klaus Oldermann | 2002-05-28 |
| 6215738 | Device for reading from or writing to optical recording media | Hartmut Richter | 2001-04-10 |
| 5940359 | Optical disk apparatus with means to selectably insert additional optical elements in an optical beams path | Heinz-Joerg Schroeder, Fritz Weisser | 1999-08-17 |
| 5889920 | Receiver/recorder of television transmissions | Philippe Compoint, Paul-Louis Meunier, Alain Staron | 1999-03-30 |
| 5764457 | Cassette including a recording medium for a recording apparatus | Jens Spille, Fritz Weisser, Hans-Joachim Platte, Jurgen Kaaden, Ernst Schroder +2 more | 1998-06-09 |
| 5625464 | Continuous television transmission reproduction and playback | Philippe Compoint, Paul-Louis Meunier, Alain Staron | 1997-04-29 |
| 5519395 | Digital recording and reproduction device | Christian Buchler, Friedhelm Zucker | 1996-05-21 |
| 5414579 | Head cylinder for a recorder | Rudiger Lehmann, Gunter Gleim, Peter Hoch, Hartmut Schandl | 1995-05-09 |
| 5279026 | Process for producing a thin-film magnetic tape head | — | 1994-01-18 |
| 5113397 | Apparatus relating to the reproduction of error encoded digitally recorded signals | Jurgen Kaaden, Franz Bigge | 1992-05-12 |
| 5036409 | Signal selection arrangement | Jurgen Kaaden | 1991-07-30 |
| 5034939 | Apparatus for selectively playing back and recording data on a disk in which the bit error rate is held minimum | Arthur Kurz | 1991-07-23 |
| 4862045 | Method and apparatus for controlling the number of revolutions of a rotor | Gunter Gleim | 1989-08-29 |
| 4803408 | Brushless DC motor system with optically scannable member for commutation | Gunter Gleim, Hartmut Schandl, Peter Hoch, Rudiger Lehmann | 1989-02-07 |
| 4774606 | Head wheel arrangement for a recorder with threaded spindle for adjustability | — | 1988-09-27 |