| 2024/0167,112 | METHOD FOR OPERATING CONVERTER AND METHOD FOR PRODUCING MOLTEN STEEL | Nov 04, 21 | May 23, 24 | JFE Steel Corporation |
| 2024/0068,060 | REFINING METHOD OF MOLTEN IRON AND MANUFACTURING METHOD OF MOLTEN STEEL USING SAME | Dec 09, 21 | Feb 29, 24 | JFE Steel Corporation |
| 2023/0399,710 | PROCESSES FOR PURIFYING IRON-BEARING MATERIALS | Feb 06, 23 | Dec 14, 23 | Not available |
| 2020/0239,973 | METHOD OF DECHROMIZING MOLTEN IRON AND METHOD OF MANUFACTURING PHOSPHATE FERTILIZER RAW MATERIAL | Oct 16, 18 | Jul 30, 20 | 501 Nippon Steel Corporation |
| 2017/0342,515 | METHODS FOR MANGANESE REMOVAL OF CAST IRON | Nov 30, 15 | Nov 30, 17 | NANIWA ROKI CO.,LTD., KINOSHITA MANUFACTORY CO.,LTD., |
| 2015/0044,087 | METHOD FOR PRODUCING MOLD STEEL, MOLD STEEL, METHOD OF PRODUCING PRE-HARDENED MOLD MATERIAL, AND PRE-HARDENED MOLD MATERIAL | Mar 25, 13 | Feb 12, 15 | HITACHI METALS, LTD. |
| 2013/0195,712 | METHOD FOR REMOVING IMPURITIES IN MOLTEN CAST IRON, AND CAST IRON RAW MATERIAL | Jan 24, 11 | Aug 01, 13 | HITACHI METALS, LTD., NANIWA ROKI CO.,LTD., KIMURA CHUZOSHO CO., LTD., KINOSHITA MANUFACTORY CO.,LTD., MIE PREFECTURE, SENSHU CORPORATION, |
| 2005/0178,407 | Method and device for cleaning a blowing head for plastic films | Feb 17, 05 | Aug 18, 05 | Kiefel Extrusion GmbH |
| 2002/0038,926 | Desulphurization reagent control method and system | Aug 13, 01 | Apr 04, 02 | DOFASCO INC. |
| 2002/0007,699 | Apparatus and method for optimizing the use of oxygen in the direct reduction of iron | Mar 23, 01 | Jan 24, 02 | MIDREX TECHNOLOGIES, INC. |