Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11446757 | Double-sided friction stir welding method for metal sheets and double-sided friction stir welding device | Rinsei Ikeda | 2022-09-20 |
| 11241755 | Friction stir welding method and apparatus for structural steel | Rinsei Ikeda, Koichi Taniguchi | 2022-02-08 |