Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5018836 | Optical disc apparatus lens drive apparatus and method for the manufacture of such | Yasushi Noda, Kenji Shimozawa | 1991-05-28 |
| 4926403 | Magneto-optic recording apparatus for recording information selectively on both sides of the recording medium | Hiroshi Tsuyuguchi, Kenji Shimozawa | 1990-05-15 |
| 4926409 | Optical permitting record/playback from both sides of an optical disk | Hiroshi Tsuyuguchi, Kenji Shimozawa | 1990-05-15 |