Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11331703 | Piercer plug and method of manufacturing the same | Yasuyoshi Hidaka, Yasuto Higashida, Yuji Yamamoto, Tatsuya Miyai | 2022-05-17 |
| 11305320 | Method for producing seamless metal pipe | Kouji Yamane, Kazuhiro Shimoda, Yuji Inoue, Shusuke Shimooka | 2022-04-19 |
| 10888906 | Method of manufacturing piercer plug | Yasuyoshi Hidaka, Yasuto Higashida, Naoya Shirasawa | 2021-01-12 |