Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5504658 | Remote control plug unit carrying a battery | Takeshi Matsuda, Hiroshi Yokozawa | 1996-04-02 |
| D363917 | Charger with data receiver for barcode reader | Takeshi Matsuda, Kazumi Nagase, Yoshiaki Kobayashi | 1995-11-07 |
| 5420739 | Portable audio device with a detachable control unit | Hiroshi Yokozawa, Takeshi Matsuda | 1995-05-30 |