Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10065461 | Tire valve registration system | Katsuhide Kumagai, Yasuhiro Shibata, Masayuki Oya | 2018-09-04 |
| 9428015 | Tire identification code registration system | Katsuhide Kumagai, Yasuhiro Shibata | 2016-08-30 |