Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12320206 | Threaded connection for pipe | Satoshi Maruta | 2025-06-03 |
| 12276359 | Threaded connection for pipe | Satoshi Maruta, Pierre Martin, Daly Daly | 2025-04-15 |
| 12018777 | Threaded connection for steel pipe | Akira Wada, Yohinori Ando | 2024-06-25 |
| 12007045 | Threaded connection for pipe | Satoshi Maruta | 2024-06-11 |
| 11933431 | Threaded connection for pipes | Kazuya Ishii, Kunio Goto, Masaaki Sugino | 2024-03-19 |
| 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 |
| 11506311 | Threaded connection for steel pipe | Sadao Douchi | 2022-11-22 |
| 11415246 | Threaded joint for steel pipes | Yoshinori Ando, Shin Ugai | 2022-08-16 |
| 11391097 | Threaded connection for steel pipe | Sadao Douchi | 2022-07-19 |
| 11313181 | Threaded connection for steel pipe | Masaaki Sugino, Keita Inose | 2022-04-26 |
| 11143337 | Threaded connection for steel pipe | Masaaki Sugino | 2021-10-12 |
| 11015746 | Threaded connection | Satoshi Maruta | 2021-05-25 |
| 10883632 | Threaded joint for steel pipes | Masaaki Sugino, Fumio Ota | 2021-01-05 |
| 10480693 | Threaded joint for steel pipes | Tatsuya Yamamoto | 2019-11-19 |
| 10077612 | Screw joint for steel pipe | Tatsuya Yamamoto, Masaaki Sugino, Russell Elder | 2018-09-18 |
| 8931809 | Tubular threaded connection | Russell Elder, Bertrand Maillon | 2015-01-13 |