Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837637 | Scanning method for disk player | Toru Akiyama, Shigeru Yasuda, Kenichiro Yasukawa | 1989-06-06 |
| 4553257 | Automatic sound volume control device | Shuichi Mori, Takashi Sakakibara | 1985-11-12 |