Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8287008 | Liquid and gas tight threaded tubular connection | Jean-Francois Charvet-Quemin, Jean-Pierre Emery, Masaaki Sugino | 2012-10-16 |
| 8038179 | Threaded joint for steel pipes | Takahiro Takano, Shigeo Nagasaku, Masaaki Sugino, Suguru Yamaguchi | 2011-10-18 |
| 7900975 | Threaded joint for steel pipes | Keiichi Nakamura, Masaaki Sugino, Suguru Yamaguchi | 2011-03-08 |
| 7823931 | Tubular threaded joint | Katsutoshi Sumitani, Masaaki Sugino, Michihiko Iwamoto, Miyuki Yamamoto, Jean-Francois Charvet-Quemin +2 more | 2010-11-02 |