Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9739477 | Drainage collection system | Sohei Akinaga, Koji Nagai, Tomohiro Ookubo, Tetsuji Namato | 2017-08-22 |
| 9500360 | Closed drain recovery system | Sohei Akinaga, Tomohiro Ookubo, Tatsuki Kobayashi | 2016-11-22 |
| 7103571 | Electronic settlement system using prepaid type electronic money | Kazuhiko Shigemi, Shinobu Hasebe, Miwa Nishio, Hiroya Seshimo | 2006-09-05 |
| 7031940 | Charge collecting system and program for controlling the same | Kazuhiko Shigemi, Shinobu Hasebe, Miwa Nishio, Hiroya Seshimo | 2006-04-18 |