Issued Patents 2022
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11401570 | Martensitic stainless steel seamless pipe for oil country tubular goods, and method for manufacturing same | Mami Endo, Masao Yuga | 2022-08-02 |
| 11306369 | High-strength stainless steel seamless pipe for oil country tubular goods, and method for producing same | Masao Yuga, Kenichiro Eguchi, Yasuhide Ishiguro | 2022-04-19 |
| 11286548 | High-strength stainless steel seamless pipe for oil country tubular goods, and method for manufacturing same | Masao Yuga, Kenichiro Eguchi, Yasuhide Ishiguro | 2022-03-29 |
| 11268161 | High strength seamless stainless steel pipe and method for producing same | Masao Yuga, Kenichiro Eguchi | 2022-03-08 |