Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10774598 | Threaded joint for steel pipes | Keita Inose, Shin Ugai, Suguru Yamaguchi, Masaaki Sugino | 2020-09-15 |
| 10774958 | Threaded joint for steel pipe | Keita Inose, Masaaki Sugino | 2020-09-15 |