Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5616188 | Method of producing molten aluminum-killed steel for thin steel sheet | Yoshiei Kato, Seiji Nabeshima, Yoichi Ito | 1997-04-01 |
| 5609199 | Method of manufacturing steel containing Ca | Yoshiei Kato, Seiko Nara | 1997-03-11 |
| 5609458 | Method of charging coal into chamber furnace-type coke oven and apparatus therefor | Kouji Hanaoka, Katsutoshi Igawa, Seiji Taguchi, Takashi Matsui | 1997-03-11 |