Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7997627 | Threaded joint for steel pipes | Masaaki Sugino, Michihiko Iwamoto, Shigeo Nagasaku, Pierre Dutilleul, Gabriel Roussie +1 more | 2011-08-16 |
| 7846274 | High strength steel pipe for an air bag | Kunio Kondo, Takashi Takano, Kenichi Beppu, Susumu Hirano, Keisuke Hitoshio +1 more | 2010-12-07 |
| 7823931 | Tubular threaded joint | Takahiro Hamamoto, Katsutoshi Sumitani, Masaaki Sugino, Michihiko Iwamoto, Jean-Francois Charvet-Quemin +2 more | 2010-11-02 |
| 7494159 | Threaded joint for steel pipes | Masaaki Sugino, Michihiko Iwamoto, Shigeo Nagasaku | 2009-02-24 |
| 6878219 | High strength steel pipe for an air bag and a process for its manufacture | Kunio Kondo, Takashi Takano, Kenichi Beppu, Susumu Hirano, Keisuke Hitoshio +1 more | 2005-04-12 |
| 6789823 | Tubular threaded joint with reinforced stop | Celine Sches, Masaaki Sugino, Emmanuel Varenne | 2004-09-14 |
| 6629289 | Timing verifying system in which waveform slew is considered | Tetsuya Akimoto | 2003-09-30 |
| 6237967 | Threaded connection for oil country tubular goods and its method of manufacturing | Masaaki Sugino | 2001-05-29 |
| 6045165 | Threaded connection tubular goods | Masaaki Sugino | 2000-04-04 |
| 5829797 | Threaded joint for oil well pipes | Akira Narita, Jun Maeda | 1998-11-03 |
| 5419595 | Threaded joint for oil well pipes | Shigeo Nagasaku | 1995-05-30 |