Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6868127 | Signal receiving circuit and signal receiving method | — | 2005-03-15 |
| 6525993 | Speaker direction detection circuit and speaker direction detection method used in this circuit | Yasuhiro Wake | 2003-02-25 |
| 5796820 | Recovery of previous filter coefficients with smaller capacity memory | — | 1998-08-18 |
| 4860366 | Teleconference system using expanders for emphasizing a desired signal with respect to undesired signals | Yuzo Fukushi, Hitoshi Fuda | 1989-08-22 |