Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5412634 | Optical scanning device for a disc player including improved focusing apparatus | Christian Buchler | 1995-05-02 |
| 5406542 | System for reducing crosstalk in an optical scanning device | — | 1995-04-11 |
| 5375109 | Magneto-optical recording and/or reproducing device | Friedhelm Zucker | 1994-12-20 |
| 5325350 | Pick-up for selectively reading and writing an optical recording medium having pits and magnetic domains | Friedhelm Zucker, Christian Buchler, Heinz-Jorg Schroder | 1994-06-28 |
| 5251196 | Optical pick-up selectively reading and writing an optical and magneto-optical recorded medium | Friedheim Zucker, Christian Buchler, Heinz-Jorg Schroder | 1993-10-05 |
| 5247507 | Optical scanning system for a sinusoidal data track | Friedhelm Zucker, Christian Buchler | 1993-09-21 |
| 5031162 | Magneto-optical recorded medium with a transparent substrate layer | Friedhelm Zucker, Christian Buchler, Heinz-Jorg Schroder | 1991-07-09 |
| 5016233 | Optical scanning arrangement for maintaining constant the light output of a laser beam or the laser current | Heinz-Jorg Schroder, Friedhelm Zucker | 1991-05-14 |
| 5014253 | Optical pick-up for selective playback and recording on a magneto-optically recorded medium | Friedheim Zucker, Christian Buchler | 1991-05-07 |
| 4959821 | Optical pick-up for scanning a magneto-optically recorded medium | Friedhelm Zucker | 1990-09-25 |
| 4650294 | Objective lens apparatus | Ikuo Nanno, Seiji Hoshi, Shinji Wakui, Hideo Hoshi | 1987-03-17 |