Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814924 | Rotary hearth furnace and screw thereof for discharging reduced iron | Yoshihiro Urabe, Sumito Hashimoto | 2004-11-09 |
| 6669756 | Discharge apparatus for movable hearth type heat-treatment furnace, its operation method, and method and apparatus for manufacturing molten iron using the same | Yoshihiro Urabe, Masahiko Tetsumoto, Toshikatsu Uchida, Sumito Hashimoto | 2003-12-30 |
| 6660221 | Rotary hearth furnace and screw thereof for discharging reduced iron | Yoshihiro Urabe, Sumito Hashimoto | 2003-12-09 |
| 6129777 | Method of producing reduced iron agglomerates | Kojiro Fuji, Hidetoshi Tanaka, Takao Harada, Takeshi Sugiyama, Yoshimichi Takenaka +6 more | 2000-10-10 |