Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6875316 | High reactivity and high strength coke for blast furnace and method for producing the same | Koji Hanaoka, Seiji Sakamoto, Katsutoshi Igawa, Yutaka Yamauchi, Shizuki Kasaoka +3 more | 2005-04-05 |
| 6830660 | Method for producing metallurgical coke | Yutaka Yamauchi, Seiji Sakamoto, Katsutoshi Igawa, Shizuki Kasaoka, Koichi Shinohara +2 more | 2004-12-14 |