Issued Patents All Time
Showing 51–55 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5820699 | Martensitic stainless steel having excellent hot workability and sulfide stress cracking resistance | Hitoshi Asahi, Akira Kawakami | 1998-10-13 |
| 5817275 | Steel plate having excellent corrosion resistance and sulfide stress cracking resistance | Hiroyuki Ogawa, Hiroshi Tamehiro, Akihiko Takahashi, Hajime Ishikawa | 1998-10-06 |
| 5798004 | Weldable high strength steel having excellent low temperature toughness | Hiroshi Tamehiro, Hitoshi Asahi, Yoshio Terada | 1998-08-25 |
| 5755895 | High strength line pipe steel having low yield ratio and excellent in low temperature toughness | Hiroshi Tamehiro, Hitoshi Asahi, Yoshio Terada | 1998-05-26 |
| 5716465 | High-corrosion-resistant martensitic stainless steel having excellent weldability and process for producing the same | Asahi Hitoshi, Hiroshi Tamehiro, Taro Muraki, Akira Kawakami | 1998-02-10 |