Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12129954 | Seamless steel pipe having desirable sulfuric acid dew-point corrosion resistance, and method for manufacturing same | Hiroyuki Takai, Mitsuhiro Okatsu, Yasumasa Takemura | 2024-10-29 |
| 8296932 | Manufacturing equipment for electric resistance welding pipes having excellent characterization for welded seam | Kazuhito Kenmochi, Takatoshi Okabe, Hiroyasu Yokoyama, Hiroyuki Shirosawa, Tetsuro Sawaki +2 more | 2012-10-30 |