Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10472690 | High-strength seamless steel pipe for oil country tubular goods and method of producing the same | Masao Yuga, Mitsuhiro Okatsu, Yasuhide Ishiguro | 2019-11-12 |
| 10329633 | High-strength seamless stainless steel pipe for oil country tubular goods and method for manufacturing the same | Yasuhide Ishiguro, Tetsu Nakahashi, Hideo Sato | 2019-06-25 |