Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11320078 | Checking tool for tube coupler | Akihiro Yamamoto, Katsumi Ogawa, Hiroki Iwata | 2022-05-03 |
| 11161229 | Clamping jig for tube connection | Akihiro Yamamoto, Katsumi Ogawa, Hiroki Iwata | 2021-11-02 |