Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11193179 | Seamless stainless steel pipe for oil country tubular goods and method of manufacturing the same | Yasuhide Ishiguro, Seigo Goto | 2021-12-07 |
| 11111566 | Low alloy high strength seamless steel pipe for oil country tubular goods | Mitsuhiro Okatsu, Masao Yuga, Hiroki Ota | 2021-09-07 |