Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847846 | Semiconductor laser chip | Haruo Sone, Osamu Yoneyama | 1989-07-11 |
| 4837429 | Photodetector for use with an optical recording medium | Haruo Sone, Tadahiro Kusuda | 1989-06-06 |
| 4669071 | Photo sensor device and optical pickup device | Toshihiko Minami, Kenji Shintani | 1987-05-26 |