Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5018134 | Method for cancelling echo in a transmitter and an apparatus therefor | Masaru Kokubo, Tatsuya Kameyama, Motohiro Kokumai, Hirotaka Hara | 1991-05-21 |
| 4896318 | Method for cancelling echo in a transmitter and an apparatus therefor | Masaru Kokubo, Tatsuya Kameyama, Motohiro Kokumai, Hirotaka Hara | 1990-01-23 |