Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679947 | Optical device having a light emitter and a photosensor on the same optical axis | Masato Doi, Hironobu Narui, Osamu Matsuda | 1997-10-21 |
| 5608233 | Optical device for magneto-optical disc system | Hironobu Narui, Masato Doi, Osamu Matsuda | 1997-03-04 |