Issued Patents 2024
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12115923 | Earth structure for filler pipe | Takahiko Ono, Takeshi Hirohara, Tadashi Koyama, Takatoshi Nagata | 2024-10-15 |
| 11906077 | Filler pipe and method for manufacturing filler pipe | Takeshi Hirohara, Tadashi Koyama | 2024-02-20 |