Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879705 | Automatic loading disc player | Yoshio Aoyagi, Hiroyuki Hirano, Toshiyuki Kimura, Susumu Niinuma, Minoru Yoshioka +6 more | 1989-11-07 |
| 4829502 | Automatic loading disc player | Yoshiro Aoyagi, Toshiyuki Kimura, Susumu Niinuma, Minoru Yoshioka, Fumihiko Yokogawa +6 more | 1989-05-09 |
| 4823056 | Pulse-width modulation drive circuit | Tsuneyoshi Nagashita, Susumi Niinuma, Isamu Nomura, Kimito Kobayashi, Akio Namiki +7 more | 1989-04-18 |