Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10407758 | Steel for oil country tubular goods and method of producing the same | Tomohiko Omura, Yuji Arai, Akihiro Sakamoto, Kazuo Okamura, Kenji Yamamoto +3 more | 2019-09-10 |
| 10378090 | Steel material | Masahito Tasaka, Yoshiaki Nakazawa, Yasuaki Tanaka, Toshiro Tomida | 2019-08-13 |