| 9994928 | Method for recycling iron-containing by-products discharged from coal-based molten ironmaking process, system therefor, and reduced iron agglomeration system | Mar 26, 14 | Jun 12, 18 | POSCO |
| 9988695 | Method for producing an agglomerate made of fine material containing metal oxide for use as a blast furnace feed material | Sep 25, 15 | Jun 05, 18 | Rheinkalk GmbH |
| 9982946 | Optical monitoring system for observing internal conditions in the tuyere zone of a blast furnace | Feb 09, 16 | May 29, 18 | Paul Wurth SA |
| 9982325 | Systems and methodologies for direct acid leaching of scandium-bearing ores | Nov 05, 15 | May 29, 18 | Scandium International Mining Corp. |
| 9976806 | Burning apparatus and method for manufacturing reduced iron using the same | Oct 29, 14 | May 22, 18 | POSCO |
| 9970071 | Method for reducing iron oxide to metallic iron using coke oven gas | Sep 14, 15 | May 15, 18 | Midrex Technologies Inc. |
| 9963753 | Blast furnace cooling plate with integrated wear detection system | Aug 07, 15 | May 08, 18 | Paul Wurth SA |
| 9963754 | Long campaign life stave coolers for circular furnaces with containment shells | Nov 16, 17 | May 08, 18 | Not available |
| 9958405 | Reverse filling carbon and temperature drop-in sensor | Dec 16, 15 | May 01, 18 | Heraeus Electro-Nite International N.V. |
| 9951992 | Metallurgical furnace | Dec 22, 14 | Apr 24, 18 | Tecnored Desenvolvimento Tecnologico S.A. |
| 9945001 | Blast furnace operation method and lance | Mar 27, 14 | Apr 17, 18 | JFE Steel Corporation |
| 9945005 | System and method for the recovery of metal values from slags, drosses, and other metal-bearing materials | Oct 13, 14 | Apr 17, 18 | Metals Technology Development Company, LLC |
| 9945009 | Processes for recovering rare earth elements from aluminum-bearing materials | Jan 22, 16 | Apr 17, 18 | Orbite Technologies Inc. |
| 9941534 | Integrated power generation and carbon capture using fuel cells | Mar 13, 14 | Apr 10, 18 | Exxonmobil Research and Engineering Company |
| 9938593 | Blast furnace operation method | Mar 27, 14 | Apr 10, 18 | JFE Steel Corporation |
| 9938595 | Direct reduction process with improved product quality and process gas efficiency | Feb 27, 14 | Apr 10, 18 | HYL TECHNOLOGIES, S.A. DE C.V.; DANIELI & C. OFFICINE MECCANICHE, S.P.A.; |
| 9938594 | Methods and systems for producing direct reduced iron and steel mill fuel gas using coke oven gas and basic oxygen furnace gas | Jul 15, 15 | Apr 10, 18 | Midrex Technologies Inc. |
| 9938604 | Method for producing pellets and method for producing iron-nickel alloy | Jun 30, 15 | Apr 10, 18 | Sumitomo Metal Mining Co. Ltd. |
| 9932649 | Fixed-type electric furnace and molten steel production method | Dec 28, 12 | Apr 03, 18 | POSCO |
| 9925591 | Mixing cold hearth metallurgical system and process for producing metals and metal alloys | Aug 21, 15 | Mar 27, 18 | MOLYWORKS MATERIALS CORP. |