Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6597642 | Photodetector unit, and optical pickup, optical reproduction apparatus, and optical recording apparatus equipped with the same | Shinichi Ijima, Hideyuki Nakanishi, Akio Yoshikawa | 2003-07-22 |