Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5764605 | G factor alignment | Friedhelm Zucker | 1998-06-09 |
| 5715232 | Recording and reproduction of items of information using ROM-RAM storage media | Yoshiharu Chikazawa, Akira Kawamura, Yasuaki Morimoto, Friedhelm Zucker | 1998-02-03 |
| 5570328 | Optical scanning device with coarse and fine scanning control | Gerhard Weissmann | 1996-10-29 |
| 5519395 | Digital recording and reproduction device | Dietmar Uhde, Friedhelm Zucker | 1996-05-21 |
| 5412634 | Optical scanning device for a disc player including improved focusing apparatus | Yasuaki Morimoto | 1995-05-02 |
| 5325350 | Pick-up for selectively reading and writing an optical recording medium having pits and magnetic domains | Yasuaki Morimoto, Friedhelm Zucker, Heinz-Jorg Schroder | 1994-06-28 |
| 5278818 | Magneto-optical recording circuitry for reversing a magnetic field | Friedhelm Zucker | 1994-01-11 |
| 5251196 | Optical pick-up selectively reading and writing an optical and magneto-optical recorded medium | Yasuaki Morimoto, Friedheim Zucker, Heinz-Jorg Schroder | 1993-10-05 |
| 5247507 | Optical scanning system for a sinusoidal data track | Yasuaki Morimoto, Friedhelm Zucker | 1993-09-21 |
| 5229902 | Circuitry for reversing a magnetic field | Friedhelm Zucker | 1993-07-20 |
| 5202874 | Circuit arrangement for identifying the type of an optical record carrier | Friedhelm Zucker | 1993-04-13 |
| 5031162 | Magneto-optical recorded medium with a transparent substrate layer | Yasuaki Morimoto, Friedhelm Zucker, Heinz-Jorg Schroder | 1991-07-09 |
| 5014253 | Optical pick-up for selective playback and recording on a magneto-optically recorded medium | Yasuaki Morimoto, Friedheim Zucker | 1991-05-07 |