Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12281755 | Gas container | Takuhiro Kumagai, Masahide Kobayashi | 2025-04-22 |
| 9434248 | Fuel tank opening and closing device | Hiroyuki Hagano, Go Oue | 2016-09-06 |
| 7665624 | Gasket and tank opening-closing device | Hiroyuki Hagano, Masayuki Nakagawa, Eishin Mori | 2010-02-23 |