Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6934012 | Ranging apparatus, ranging method, and opto-electric conversion circuit | Naoto Inaba | 2005-08-23 |
| 6016297 | Information reproduction method and apparatus that move light beam toward outer perimeter of optical disk in response to tracking error | Masatoshi Sato | 2000-01-18 |