Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10150147 | Piercing plug | Atsushi Nosaka, Yasuyoshi Hidaka, Ryuutarou Ogata | 2018-12-11 |
| 9914159 | Method for producing plug for piercing-rolling | Tomohiro Yamamoto, Yasuyoshi Hidaka | 2018-03-13 |