Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11453929 | Cooling device and production method for rail | Kenji Okushiro, Hiroshi Ishikawa | 2022-09-27 |
| 11230747 | Method of quenching steel pipe, apparatus for quenching steel pipe, method of manufacturing steel pipe and facility for manufacturing steel pipe | Hiroyuki Fukuda | 2022-01-25 |