Issued Patents 2025
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12252756 | High-strength seamless steel pipe and method for manufacturing same | Masao Yuga, Toshiharu Hirama | 2025-03-18 |
| 12227815 | Seamless steel pipe having desirable sulfuric acid dew-point corrosion resistance, and method for manufacturing same | Masao Yuga, Hiroyuki Takai, Yasumasa Takemura | 2025-02-18 |
| 12227816 | High-strength seamless steel pipe and method for manufacturing same | Masao Yuga, Toshiharu Hirama | 2025-02-18 |