Issued Patents 2023
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11828391 | Threaded connection | Satoshi Maruta, Masaaki Sugino, Alan Fothergill | 2023-11-28 |
| 11719365 | Threaded connection for steel pipe | Sadao Douchi | 2023-08-08 |
| 11629560 | Threaded connection for steel pipe | Masaaki Sugino | 2023-04-18 |
| 11624460 | Threaded connection for steel pipe | Masaaki Sugino, Keita Inose | 2023-04-11 |
| 11608692 | Threaded connection for steel pipes | Satoshi Maruta, Tadashi Nakamura | 2023-03-21 |