Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12227815 | Seamless steel pipe having desirable sulfuric acid dew-point corrosion resistance, and method for manufacturing same | Masao Yuga, Hiroyuki Takai, Mitsuhiro Okatsu | 2025-02-18 |
| 12129954 | Seamless steel pipe having desirable sulfuric acid dew-point corrosion resistance, and method for manufacturing same | Hiroyuki Takai, Mitsuhiro Okatsu, Tatsuo Koide | 2024-10-29 |