Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9845525 | Equipment system for producing piercing-rolling plug | Tomohiro Yamamoto, Yasuyoshi Hidaka | 2017-12-19 |
| 9764366 | Method for regenerating a plug for use in a piercing machine | Yasuyoshi Hidaka, Kazuhiro Shimoda, Yosuke Tatebayashi | 2017-09-19 |