Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11052455 | Caulking jig and manufacturing method using same | Arata Tatsumi, Takatoshi Nanbu | 2021-07-06 |
| 11027363 | Ironing plate for friction stir welding apparatus and friction stir welding apparatus including the same, and friction stir welding method | Mitsuru Onose, Shinichi Kaga, Akihiro Satou | 2021-06-08 |