Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9916607 | Ink billing system with changeable billing rate table | Motofumi Shiraiwa, Yoshihiro Ueno, Shinji Takahashi | 2018-03-13 |
| 8489521 | Ink billing system with changeable billing rate table | Motofumi Shiraiwa, Yoshihiro Ueno, Shinji Takahashi | 2013-07-16 |