Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6793710 | Method for blowing oxygen in converter and top-blown lance for blowing oxygen | Ikuhiro Sumi, Yoshiteru Kikuchi, Ryo Kawabata, Atsushi Watanabe, Shinichi Akai | 2004-09-21 |
| 5356493 | Blister-resistant steel sheet and method for producing thereof | Seishi Tsuyama, Yoshihiro Hosoya, Shuji Kanetoh, Daijiro Koyanagi, Hiromi Nakamura | 1994-10-18 |