Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4942471 | Blanking circuit for television receiver | Takashi Chikuma | 1990-07-17 |
| 4667241 | Ghost cancelling system | Junya Saito, Hisafumi Yamada | 1987-05-19 |
| 4517601 | Power-responsive ghost cancelling system | Hisafumi Yamada, Junya Saito | 1985-05-14 |