| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 06/22/1976 | US3964900 Lime, sodium nitrate, aluminum compound, and fluorospar, cryolite or magnesium fluoride |
| 06/08/1976 | US3961779 Apparatus and method for refining a metal melt |
| 06/08/1976 | US3961778 Installation for the treating of a molten metal |
| 06/01/1976 | US3960616 Rare earth metal treated cold rolled, non-oriented silicon steel and method of making it |
| 06/01/1976 | US3960546 Method for eliminating nose-skulls from steelmaking vessels |
| 05/25/1976 | US3959029 Aluminum, multistage, hot rolling, annealing |
| 05/25/1976 | US3958980 Process for removing alkali-metal impurities from molten aluminum |
| 05/18/1976 | US3957502 Addition of magnesium to molten metal |
| 05/18/1976 | US3957487 Holding the temperature of metal melts of specified compositions |
| 05/11/1976 | US3955970 Continuous melting of aluminum scrap |
| 05/11/1976 | US3955967 Treatment of steel |
| 05/04/1976 | US3954134 Apparatus for treating metal melts with a purging gas during continuous casting |
| 04/27/1976 | US3953308 Process and apparatus for desulfurizing of liquid metals |
| 04/27/1976 | US3953245 Process for the production of drawing steel |
| 04/27/1976 | US3953198 Method for treating molten iron using a magnesium infiltrated metal network |
| 04/27/1976 | US3953197 From scrap |
| 04/20/1976 | US3951645 Steelmaking practice for production of a virtually inclusion-free semi-killed product |
| 04/06/1976 | US3948643 Method for refining steel |
| 03/30/1976 | US3947267 Process for making stainless steel |
| 03/30/1976 | US3946907 Vacuum sealing for the discharge nozzle of a casting ladle serving as a vacuum container |
| 03/23/1976 | US3945820 Refining |
| 03/23/1976 | US3945819 Ferrous metal network impregnated with magnesium metal |
| 03/16/1976 | US3944476 Process for desulfurizing molten metals |
| 03/09/1976 | US3942977 Process for making iron or steel utilizing lithium containing material as auxiliary slag formers |
| 03/09/1976 | US3942775 Submerged desulphurization device and method |
| 02/24/1976 | US3940263 Steelmaking with inert gas blowing |
| 02/03/1976 | US3935895 Continuous steel casting method |
| 01/27/1976 | US3934863 Apparatus for refining molten metal and molten metal refining process |
| 01/27/1976 | US3934862 Device for supplying a treating agent to molten metal in a ladle |
| 01/06/1976 | US3930842 Method of producing alloys based on calcium, silicon and iron |