Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5883871 | Information recording/reproduction apparatus with shutter opening/closing mechanism on upper surface of cartridge holder | — | 1999-03-16 |
| 4907858 | Optical pickup apparatus | Hiroshi Hara, Hiraku Sonobe, Osamu Koyama, Masamichi Tateoka, Koichi Ida +1 more | 1990-03-13 |