Issued Patents 2023
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11549620 | Screw joint for oil well pipe | Takamasa Kawai, Masaki Yoshikawa, Jun Takano, Haruhiko Seki | 2023-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11549620 | Screw joint for oil well pipe | Takamasa Kawai, Masaki Yoshikawa, Jun Takano, Haruhiko Seki | 2023-01-10 |