Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6835434 | Method for manufacturing disc-shaped optical recording medium and disc-shaped substrate for optical recording medium | Hideki Ishizaki, Mamoru Usami | 2004-12-28 |
| 6693501 | Surface acoustic wave apparatus using filters with overlapped propagation paths and communications unit | Yoichi Sawada | 2004-02-17 |