Class C21C : PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL
Subclass 5/34: 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 through the bath (C21C 5/35 takes precedence)
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11821691 | Gas injection nozzle refractory and gas injection nozzle | Sep 19, 19 | Nov 21, 23 | JFE Steel Corporation; Shinagawa Refractories Co. Ltd.; |
| 11155890 | Tuyere for a basic oxygen furnace | Jul 17, 19 | Oct 26, 21 | Air Products and Chemicals, Inc. |
| 10781499 | Bottom stirring tuyere and method for a basic oxygen furnace | Jan 17, 18 | Sep 22, 20 | Air Products and Chemicals, Inc. |
| 10400293 | Metal making lance with infrared camera in lance head | Nov 27, 17 | Sep 03, 19 | Berry Metal Company |
| 10330387 | Securing device for a cylindrical ceramic hollow body and fireproof ceramic gas purging brick having such type of securing device | Jul 28, 15 | Jun 25, 19 | Refractory Intellectual Property GmbH & Co. KG |
| 9879916 | Gas purging element and associated gas connection element | Nov 11, 14 | Jan 30, 18 | REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG |
| 9683272 | Gas purging element and associated gas feed line | Aug 07, 13 | Jun 20, 17 | REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG |
| 9683273 | Alloy refining methods | Apr 10, 15 | Jun 20, 17 | ATI PROPERTIES LLC |
| 9528766 | Top submerged injecting lances | Jun 27, 12 | Dec 27, 16 | OUTOTEC OYJ |
| 9506123 | Purge plug | Mar 15, 13 | Nov 29, 16 | VESUVIUS CRUCIBLE COMPANY |
| 9469882 | Refractory purging devices | Nov 02, 12 | Oct 18, 16 | VESUVIUS CRUCIBLE COMPANY |
| 9315875 | Method of refining molten iron | Jul 19, 12 | Apr 19, 16 | JFE STEEL CORPORATION |
| 9109838 | Gas blowing nozzle | Jun 23, 11 | Aug 18, 15 | Shinagawa Refractories Co., Ltd. |
| 9045805 | Alloy refining methods | Mar 12, 13 | Jun 02, 15 | ATI PROPERTIES LLC |
| 8771400 | Method for manufacturing molten iron | May 14, 10 | Jul 08, 14 | ISTC CO., LTD. |
| 7942950 | Method for controlling a molten metal bath bubbling in a metallurgical vessel and a device for carrying out said method | Jun 14, 05 | May 17, 11 | ARCELORMITTAL FRANCE |
| 7901482 | Removal method of nitrogen in molten steel | Feb 06, 07 | Mar 08, 11 | JFE STEEL CORPORATION |
| 7524355 | Nano-composite energetic powders prepared by arrested reactive milling | Nov 12, 04 | Apr 28, 09 | NEW JERSEY INSTITUTE OF TECHNOLOGY |
| 5733358 | Process and apparatus for the manufacture of steel from iron carbide | Sep 11, 95 | Mar 31, 98 | PRAXAIR TECHNOLOGY, INC., USX CORPORATION, A CORP. OF DE, |
| 5328658 | Method of refining chromium-containing steel | Aug 04, 93 | Jul 12, 94 | Daido Tokushuko Kabushiki Kaisha |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2023/0287,529 | BLOWING CONTROL METHOD FOR MAINTAINING MUSHROOM HEAD OF BOTTOM-BLOWING NOZZLE CONVERTER | Jul 22, 21 | Sep 14, 23 | Not available |
| 2019/0218,631 | BOTTOM STIRRING TUYERE AND METHOD FOR A BASIC OXYGEN FURNACE | Jan 17, 18 | Jul 18, 19 | Air Products and Chemicals, Inc. |
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