Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11428468 | Rotary hearth furnace, and method for producing reduced iron using rotary hearth furnace | Tomoki Uemura, Koji Tokuda | 2022-08-30 |
| 9180521 | Method for producing granular metallic iron | Ryota Misawa, Osamu Tsuge | 2015-11-10 |
| 8034283 | Rotary hearth furnace and method of operating the same | Masahiko Tetsumoto, Koji Tokuda | 2011-10-11 |
| 7993572 | Screw conveyor and operation control method for the same | Masahiko Tetsumoto | 2011-08-09 |
| 7922484 | Rotary hearth furnace | Masahiko Tetsumoto, Hiroshi Sugitatsu | 2011-04-12 |
| 7204689 | Seal structure of solid feeding screw, and method of manufacturing reduced metal using the seal structure | Masahiko Tetsumoto | 2007-04-17 |
| 6814924 | Rotary hearth furnace and screw thereof for discharging reduced iron | Yoshihiro Urabe, Takao Umeki | 2004-11-09 |
| 6790255 | Moving-hearth heating furnace and method for making reduced metal agglomerates | Hiroshi Uemura | 2004-09-14 |
| 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, Takao Umeki, Masahiko Tetsumoto, Toshikatsu Uchida | 2003-12-30 |
| 6660221 | Rotary hearth furnace and screw thereof for discharging reduced iron | Yoshihiro Urabe, Takao Umeki | 2003-12-09 |
| 6258149 | Method of producing reduced iron agglomerates | Takeshi Sugiyama, Hidetoshi Tanaka, Takao Harada, Yoshimichi Takenaka, Shoji Shirouchi | 2001-07-10 |
| 6129777 | Method of producing reduced iron agglomerates | Kojiro Fuji, Hidetoshi Tanaka, Takao Harada, Takeshi Sugiyama, Yoshimichi Takenaka +6 more | 2000-10-10 |