Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6778483 | Multilevel record modulator and demodulator | Takashi Yamamoto, Hiroyuki Nakahira, Akira Yamamoto | 2004-08-17 |
| 6745218 | Adaptive digital filter | Akira Yamamoto, Hiroyuki Nakahira, Hirokuni Fujiyama | 2004-06-01 |