Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8181469 | Refrigerating method and refrigerating system utilizing gas hydrate | Toshio Ichijo | 2012-05-22 |
| 5064033 | Rotary damper | Yasuo Koike | 1991-11-12 |
| 4928964 | Reel driving device for use in the slot machine | — | 1990-05-29 |
| 4874172 | Reel tare fixing device and reel | — | 1989-10-17 |
| 4840290 | Bulk loaded coin dispensing machine | Shunichi Nakamura, Kouichi Iimura, Susumu Ozawa | 1989-06-20 |