Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6539355 | Signal band expanding method and apparatus and signal synthesis method and apparatus | Masayuki Nishiguchi | 2003-03-25 |
| 6507859 | Signal processing method | Kazuhiko Ueda | 2003-01-14 |