Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9506132 | Method for manufacturing heavy wall steel pipe | Tatsuro Katsumura, Hiroyuki Fukuda, Koji Sugano, Kazutoshi Ishikawa | 2016-11-29 |
| 9234254 | High-strength seamless steel tube, having excellent resistance to sulfide stress cracking, for oil wells and method for manufacturing the same | Kenichiro Eguchi, Yuji Tanaka, Mitsuo Kimura, Katsumi Yamada, Haruo Nakamichi | 2016-01-12 |