Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10495241 | Threaded joint for steel pipe | Masaaki Sugino, Sadao Douchi | 2019-12-03 |
| 10473241 | Threaded joint for steel pipes | Fumio Ota, Shin Ugai, Masaaki Sugino | 2019-11-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10495241 | Threaded joint for steel pipe | Masaaki Sugino, Sadao Douchi | 2019-12-03 |
| 10473241 | Threaded joint for steel pipes | Fumio Ota, Shin Ugai, Masaaki Sugino | 2019-11-12 |