| 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 |
| 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 |
| 9938593 | Blast furnace operation method | Mar 27, 14 | Apr 10, 18 | JFE Steel Corporation |
| 9873923 | Blast furnace operation method | Mar 28, 14 | Jan 23, 18 | JFE STEEL CORPORATION |
| 9797023 | Shaft furnace and method of operating same | May 20, 14 | Oct 24, 17 | Grede LLC |
| 9683273 | Alloy refining methods | Apr 10, 15 | Jun 20, 17 | ATI PROPERTIES LLC |
| 9650689 | Method for operating a blast furnace | Jul 11, 12 | May 16, 17 | JFE STEEL CORPORATION |
| 9617609 | Method for preparing blast furnace blow-in coal | Sep 19, 13 | Apr 11, 17 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 9556497 | Blast furnace | Jan 16, 13 | Jan 31, 17 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 9410218 | Method for operating a blast furnace | Jul 11, 12 | Aug 09, 16 | JFE STEEL CORPORATION |
| 9400138 | Melting reduction assembly and method for operating a melting reduction assembly | Jun 13, 12 | Jul 26, 16 | PRIMETALS TECHNOLOGIES AUSTRIA GMBH |
| 9309578 | Blast furnace operating method and tube bundle-type lance | Jul 11, 13 | Apr 12, 16 | JFE STEEL CORPORATION |
| 9222144 | Injecting gas into a vessel | Dec 11, 09 | Dec 29, 15 | TECHNOLOGICAL RESOURCES PTY. LIMITED |
| 9169525 | System of leaktight connection between a tuyere and a hot blast inlet nozzle for a shaft furnace, and steel-making blast furnace comprising such a system | Nov 06, 12 | Oct 27, 15 | PAUL WURTH S.A. |
| 9121077 | Tuyere remover | Jun 22, 12 | Sep 01, 15 | TMS INTERNATIONAL CORPORATION |
| 9045805 | Alloy refining methods | Mar 12, 13 | Jun 02, 15 | ATI PROPERTIES LLC |
| 9028743 | Bustle pipe arrangement | Dec 16, 09 | May 12, 15 | Paul Wurth Refractory & Engineering GmbH, PAUL WURTH S.A., |
| 8980165 | Tuyere stock arrangement of a blast furnace | May 23, 11 | Mar 17, 15 | PAUL WURTH S.A. |
| 8968441 | Method and system for producing pig iron or fluid steel pre-products | Jan 14, 10 | Mar 03, 15 | PRIMETALS TECHNOLOGIES AUSTRIA GMBH |