Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6519222 | Automatic disc changing device | Akio Hayashi, Hitoshi Nakamura, Kouichi Shibasaki | 2003-02-11 |
| 6304525 | Disc inverting mechanism and disc automatic changer with the mechanism | Akio Hayashi, Hitoshi Nakamura, Kouichi Shibasaki, Noritada Kuwayama | 2001-10-16 |
| 6154337 | Cassette transfer apparatus | Akio Hayashi, Katsuhiko Tanaka, Hidemi Tachikawa, Hitoshi Nakamura, Tetsuya Yoshioka | 2000-11-28 |