Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687153 | Optical head device and optical information apparatus using a lithium niobate hologram with divisional areas to diffract light to corresponding photo detector areas | Yoshiaki Komma, Seiji Nishino, Hiroaki Yamamoto, Makoto Kato, Tetsuo Saimi | 1997-11-11 |
| 5650987 | Optical data recording/reproducing apparatus and optical data storage medium for use in the same | — | 1997-07-22 |
| 5648951 | Movable optical head integrally incorporated with objective lens and hologram element | Makoto Kato, Yoshiaki Komma, Yoshikazu Hori, Seiji Nishino, Tetsuo Saimi | 1997-07-15 |