Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7519543 | Promotion method and system | Michihiro Ota, Hiroaki Yoshida | 2009-04-14 |
| 7020691 | Promotion system and method of managing automatic vending machine by the promotion system | Michihiro Ota, Hiroaki Yoshida | 2006-03-28 |