| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 03/21/1978 | USRE29584 Decarburization |
| 03/07/1978 | USRE29567 Method of refining steel |
| 03/07/1978 | CA1027375A1 Method for modifying physical and/or chemical properties of a metal alloy |
| 02/14/1978 | US4073643 Continuously cast steel slabs for steel sheets having excellent workabilities and method for production thereof |
| 01/31/1978 | US4071595 Method of forming fluorite briquettes |
| 01/31/1978 | US4071356 Method for refining a molten steel in vacuum |
| 01/17/1978 | US4069039 Method for desulfurization using arc heat under vacuum |
| 01/10/1978 | US4067730 Deoxidation, desulfurization with calcium |
| 01/03/1978 | US4066446 Thermally bloated fireclay (scr verilite) ladle insulation |
| 01/03/1978 | US4066444 Process for deoxidizing steel by means of molten aluminum |
| 01/03/1978 | US4066442 Method of making chrome steel in an electric arc furnace |
| 01/03/1978 | US4066248 Charging device |
| 12/27/1977 | US4065296 Process for preparing composition containing carbon and low sulfur, nitrogen and ash content |
| 12/27/1977 | US4064925 Continuous casting method and apparatus |
| 11/29/1977 | US4060409 Mechanically stirred furnace for pyrometallurgical operations and processes |
| 11/29/1977 | US4060407 Methods and apparatus for adding mischmetal to molten steel |
| 11/29/1977 | US4060406 Aluminum, alumina, fluorspar, alkali metal carbonate slag conditioner |
| 11/08/1977 | US4057421 Process for vacuum decarburization of steel |
| 11/08/1977 | US4057420 Methods for dissolving volatile addition agents in molten metal |
| 11/01/1977 | US4056387 Carbon-manganese-sulfur-phosphorus-silicon-lead-iron alloy |
| 10/18/1977 | US4054445 Calcium carbide |
| 10/11/1977 | US4053146 Continuous stream treatment of ductile iron |
| 10/04/1977 | US4052199 Gas injection method |
| 10/04/1977 | US4052041 Apparatus for injecting granular material into a molten metal |
| 09/27/1977 | US4050925 Process for the production and use of activated alumina in refining steel |
| 09/20/1977 | US4049433 Method for the homogeneous distribution of alloys in molten steel using oil and water mixtures |
| 09/13/1977 | US4047556 Continuous casting method |
| 09/06/1977 | US4046187 Process of manufacturing killed steel ingots of superior quality |
| 08/30/1977 | US4045300 Method for reducing the response time in oxygen measuring probes |
| 08/30/1977 | US4045213 Deoxidizing andor carburizing ferrous metal bath; oxidizing, scavenging and neutral gases |
| 08/23/1977 | US4043803 Process for the manufacture of a compacted synthetic flux based on calcium fluoride |
| 08/23/1977 | US4043798 Process for producing steel having improved low temperature impact characteristics |
| 08/16/1977 | US4042381 Shaped sulfide inclusions |
| 08/16/1977 | US4042377 Method of and composition for the desulfurization of steel |
| 08/16/1977 | US4042223 Arrangement for and a method of introducing particulate material into molten baths |
| 08/09/1977 | US4040873 Method of making low yield point cold-reduced steel sheet by continuous annealing process |
| 08/09/1977 | US4040818 To form metal-permeable matrix; agglomerate containing calcium fluoride |
| 08/09/1977 | US4040610 Apparatus for refining molten metal |
| 08/09/1977 | US4040609 Metal smelting plant with treatment stand to regulate the analysis of metal smelts, particularly for desulphurization of liquid crude iron or liquid unrefined steel |
| 08/02/1977 | US4039326 Antiscorific powder for the casting of steels into ingot molds |
| 08/02/1977 | US4039320 Reducing material for steel making |
| 07/26/1977 | US4038069 Heat-insulating agent for molten metal |
| 07/19/1977 | US4037043 Extended arc furnace and process for melting particulate charge therein |
| 07/19/1977 | US4036635 Process for making a steel melt for continuous casting |
| 07/19/1977 | US4035892 Iron or iron alloy sheath, calcium core |
| 07/12/1977 | US4034970 Method and device for nodularizing cast iron |
| 06/28/1977 | US4032704 Method and apparatus for treating a metal melt |
| 06/21/1977 | US4031189 Coking, filter aids |
| 06/14/1977 | US4029497 Manufacture of alloy steels and ferrous alloys |
| 05/31/1977 | US4027095 Hermetically sealed arc furnace |
| 05/31/1977 | US4026698 Removal of tin from molten iron by chlorination, using oxygen to conserve chlorine and to produce tin oxide |
| 05/17/1977 | US4023962 Process for regenerating or producing steel from steel scrap or reduced iron |
| 05/17/1977 | US4023783 Degasing of liquid metals, in particular of liquid steel, by vacuum jet |
| 05/10/1977 | US4022613 Metallurgical material and process for treating iron or steel therewith |
| 05/10/1977 | US4022612 Oxygen, water vapor |
| 05/10/1977 | US4022444 Apparatus for adding mischmetal to molten steel |
| 05/03/1977 | US4021233 Oxidation of iron, cobalt, nickel alloys containing chromium |
| 04/19/1977 | US4018597 Rare earth metal silicide alloys |
| 04/05/1977 | US4015655 Process and apparatus for continuously casting strands of unkilled or semi-killed steel |
| 03/29/1977 | US4014686 Deoxidation of open type steels for improved formability |
| 03/29/1977 | US4014685 Desulfurization using lime-based flux |
| 03/29/1977 | US4014684 Desulfurization using a lime based flux |
| 03/29/1977 | US4014683 Manganese, aluminum, continuous casting |
| 03/08/1977 | US4011290 Method and device for dispersing a melt with a fluid jet |
| 03/08/1977 | US4010938 Metal treatment gun and method |
| 03/01/1977 | US4010028 Sulfur scavenger in refining of metals |
| 02/22/1977 | US4009023 Calcium or magnesium-free steel |
| 02/01/1977 | US4006284 Extended arc furnace and process for melting particulate charge therein |
| 01/25/1977 | US4004919 Method and apparatus for treating metal |
| 01/18/1977 | US4003560 Gas-treatment plant for molten metal |
| 01/04/1977 | US4001009 Decarbonization |
| 12/28/1976 | US3999984 Method of adding metallic additive to molten metal of higher temperature than boiling point of the additive |
| 12/28/1976 | US3999979 Removal of sulphur from molten metal |
| 12/28/1976 | US3999978 Calcining limestone or dolomite |
| 12/21/1976 | US3998625 Of molten ferrous metals by injecting fluidized mixture of non-oxidizing and of magnesium-containing particles |
| 12/21/1976 | US3998624 Lime andor limestone flux; calcium fluoride; metal aluminum silicate; iron or its oxide |
| 11/16/1976 | US3992195 Deoxidizing sulfur containing steel |
| 11/16/1976 | US3991988 Apparatus for mixing different kinds of metallic material |
| 11/09/1976 | US3990888 Iron, cobalt, or nickel, carbon and chromium alloy; nitrogen; argon |
| 11/09/1976 | US3990887 Carbon, silicon, manganese, iron, and aluminum; deoxidation |
| 10/26/1976 | US3988177 Decarburization and recrystallizing annealing |
| 10/12/1976 | US3985550 Method of producing low sulfur steel |
| 10/05/1976 | US3984233 Ferrous metal network impregnated with rare earth metals |
| 09/28/1976 | US3982927 Method of blowing to obtain a very low amount of carbon in chrome steels |
| 09/28/1976 | US3982913 Method and apparatus for degassing metallic melts |
| 09/14/1976 | US3980469 Method of desulfurization of a steel melt |
| 08/24/1976 | US3976513 Method for judging the fitness of a steel composition to a casting practice |
| 08/24/1976 | US3976473 Method for producing an extremely low carbon and nitrogen steel in a vacuum refining apparatus |
| 08/24/1976 | US3976286 Metallurgical lances |
| 08/17/1976 | US3975004 Vacuum degassing apparatus |
| 08/03/1976 | US3973061 Method for the preparation of porous ferrous metal impregnated with magnesium metal |
| 08/03/1976 | US3972517 Tuyere for introducing reactants into a bath of molten metal |
| 07/27/1976 | US3971655 Method for treatment of molten steel in a ladle |
| 07/27/1976 | US3971549 Process and apparatus for treating and transferring metal in the liquid state |
| 07/27/1976 | US3971548 Metallurgical furnace having a blast injection nozzle |
| 07/20/1976 | US3970135 Method for applying flux powder to the bath level in a continuous casting mold during continuous casting |
| 07/13/1976 | US3969159 Casting powder |
| 07/13/1976 | US3969105 Treating agent for high melting temperature metals |
| 07/06/1976 | US3967955 Method for treating a metal melt |
| 06/22/1976 | US3964916 Casting powder |