Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8038179 | Threaded joint for steel pipes | Takahiro Takano, Masaaki Sugino, Takahiro Hamamoto, Suguru Yamaguchi | 2011-10-18 |
| 7997627 | Threaded joint for steel pipes | Masaaki Sugino, Miyuki Yamamoto, Michihiko Iwamoto, Pierre Dutilleul, Gabriel Roussie +1 more | 2011-08-16 |