Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6597766 | Telephone apparatus | — | 2003-07-22 |
| 6546490 | Signal transmision method | Yoichiro Sako, Yoshitomo Osawa, Akira Kurihara, Shigeyuki Yoneyama | 2003-04-08 |
| 6516064 | Signal recording apparatus, signal record medium and signal reproducing apparatus | Yoshitomo Osawa, Yoichiro Sako, Akira Kurihara | 2003-02-04 |