Class C21C : PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL
Subclass 5/32: Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel Manufacture of steel in the converter Regulating or controlling the blowing Blowing from above (C21C 5/35 takes precedence)
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11788160 | Converter CO2—O2 mixed injection smelting method and method of dynamically controlling fire point area temperature | Jan 21, 20 | Oct 17, 23 | University of Science and Technology Beijing |
| 11466332 | Process for injecting particulate material into a liquid metal bath | Dec 06, 18 | Oct 11, 22 | Linde GmbH |
| 11293069 | Method for oxygen-blowing refining of molten iron and top-blowing lance | Nov 08, 18 | Apr 05, 22 | JFE Steel Corporation |
| 11124849 | Method for operating converter | May 07, 18 | Sep 21, 21 | JFE Steel Corporation |
| 9957581 | Method for refining hot metal in converter | Mar 25, 13 | May 01, 18 | JFE Steel Corporation |
| 9863014 | Lance and operation method using the same | Dec 16, 13 | Jan 09, 18 | POSCO |
| 9580764 | Top-blowing lance and method for refining molten iron using the same | Oct 16, 12 | Feb 28, 17 | JFE STEEL CORPORATION |
| 9493854 | Converter steelmaking method | Dec 19, 12 | Nov 15, 16 | JFE STEEL CORPORATION |
| 9259780 | Rotational lance drive and rotational lance injection method | Mar 15, 13 | Feb 16, 16 | ESM GROUP INC. |
| 8771400 | Method for manufacturing molten iron | May 14, 10 | Jul 08, 14 | ISTC CO., LTD. |
| 8388888 | Apparatus for injecting gas into a vessel | Dec 14, 07 | Mar 05, 13 | TECHNOLOGICAL RESOURCES PTY. LIMITED |
| 8366992 | Gas injection lance | Oct 14, 05 | Feb 05, 13 | TECHNOLOGICAL RESOURCES PTY. LIMITED |
| 8142543 | Refining ferroalloys | Jun 09, 03 | Mar 27, 12 | BOC GROUP PLC, THE |
| 8137432 | Method and furnace for melting steel scrap | Jun 08, 07 | Mar 20, 12 | PRIMETALS TECHNOLOGIES GERMANY GMBH |
| 8097063 | System for furnace slopping prediction and lance optimization | Feb 26, 10 | Jan 17, 12 | TENOVA GOODFELLOW INC. |
| 8017068 | Inducing swirl in a gas flow | Dec 14, 07 | Sep 13, 11 | TECHNOLOGICAL RESOURCES PTY. LIMITED |
| 7935302 | Automatic dross processing system | Sep 25, 09 | May 03, 11 | Q.C. Designs, Inc. |
| 7563405 | System of gas and/or gas and powders injection in liquid metals through rotary refractory lance | Aug 25, 05 | Jul 21, 09 | Insider LTDA. |
| 7550108 | Metallurgical vessel | Jul 10, 03 | Jun 23, 09 | TATA STEEL NEDERLAND TECHNOLOGY B.V. |
| 7445747 | Apparatus for injecting solid particulate material into a vessel | Jul 26, 05 | Nov 04, 08 | TECHNOLOGICAL RESOURCES PTY. LIMITED |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0393,159 | FURNACE SLAG AMOUNT ESTIMATION DEVICE, FURNACE SLAG AMOUNT ESTIMATION METHOD, AND MOLTEN STEEL PRODUCTION METHOD | Aug 10, 22 | Nov 28, 24 | JFE Steel Corporation |
| 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 |
| 2023/0366,052 | Lance for blowing oxygen in steelmaking | Oct 05, 21 | Nov 16, 23 | Not available |
| 2017/0335,417 | Method and apparatus for controlling the pressure in the exhaust gas duct of a converter | Oct 27, 15 | Nov 23, 17 | SMS GROUP GMBH |
| 2014/0327,192 | METHOD FOR OPERATING AN OXYGEN BLOWING LANCE IN A METALLURGICAL VESSEL AND A MEASUREMENT SYSTEM FOR DETERMINING A MEASUREMENT SIGNAL USED IN THE METHOD | Apr 24, 14 | Nov 06, 14 | SMS GROUP GMBH |
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