Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6136109 | Method of manufacturing high chromium martensite steel pipe having excellent pitting resistance | Yukio Miyata, Mitsuo Kimura, Tomoya Koseki, Takaaki Toyooka | 2000-10-24 |
| 5985209 | Martensitic steel for line pipe having excellent corrosion resistance and weldability | Mitsuo Kimura, Yukio Miyata, Tomoya Koseki, Takaaki Toyooka | 1999-11-16 |
| 5858128 | High chromium martensitic steel pipe having excellent pitting resistance and method of manufacturing | Yukio Miyata, Mitsuo Kimura, Tomoya Koseki, Takaaki Toyooka | 1999-01-12 |