Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5073925 | Method and apparatus for the protection of signal copy | Atsushi Nagata, Takanori Senoo, Kenichi Takahashi | 1991-12-17 |
| 4979210 | Method and apparatus for protection of signal copy | Atsushi Nagata, Takanori Senoo, Kenichi Takahashi | 1990-12-18 |
| 4882758 | Method for extracting formant frequencies | Shuji Takata, Michiyo Goto | 1989-11-21 |