Issued Patents 2025
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12428712 | Martensitic stainless steel material | Daisuke Matsuo | 2025-09-30 |
| 12385118 | Duplex stainless seamless steel pipe and method for producing duplex stainless seamless steel pipe | Kosei KATO | 2025-08-12 |
| 12371765 | Seamless steel pipe suitable for use in sour environment | Seiya OKADA, Hiroki Kamitani, Nobuaki Komatsubara, Shohei Ikeda, Naoya Shirasawa | 2025-07-29 |
| 12241148 | Alloy material and oil-well seamless pipe | Hideki Takabe, Masayuki Sagara | 2025-03-04 |