Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6736876 | Fluidized bed breakage prevention system for fluidized bed reduction reactor and method | Myoung-Kyun Shin, Jun Hyuk Lee, Sun-Kwang Jeong, Nag-Joon Choi, Hang Goo Kim | 2004-05-18 |
| 6585798 | Fluidized bed reactor for preventing the fine iron ore from sticking therein and method thereof | Nag-Joon Choi, Sun-Kwang Jeong, Hang Goo Kim, Hauzenberger Franz | 2003-07-01 |
| 6277324 | Apparatus for manufacturing molten pig iron and reduced iron by utilizing a fluidized bed | Sang Hoon Joo, Sang Deuk Lee, Myoung-Kyun Shin, Jun Hyuk Lee, Min Young Cho +1 more | 2001-08-21 |
| 6235079 | Two step twin-single fluidized bed pre-reduction apparatus for pre-reducing fine iron ore, and method therefor | Nag-Joon Choi, Sun-Kwang Jeong, Uoo Chang Jung | 2001-05-22 |
| 6110413 | 3-Stage fluidized bed type fine iron ore reducing apparatus having x-shaped circulating tubes | Uoo Chang Jung, Nag-Joon Choi, Hang Goo Kim | 2000-08-29 |