Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703861 | Integrated confocal optical pick-up head with a hologram and a polarizer mounted on each side of a transparent heat sink | — | 1997-12-30 |
| 5699098 | Recording unit structure and recording device | Toshimasa Kobayashi, Shuji Sato, Hideki Hirano, Kenji Shinozaki, Takayuki Fujioka | 1997-12-16 |
| 5679947 | Optical device having a light emitter and a photosensor on the same optical axis | Masato Doi, Hironobu Narui, Kenji Sahara | 1997-10-21 |
| 5608233 | Optical device for magneto-optical disc system | Kenji Sahara, Hironobu Narui, Masato Doi | 1997-03-04 |