| Patents for H05B 7 - Heating by electric discharge (3,980) |
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| 10/30/1990 | CA1275674C Method for regulating the electrodes in a furnace having freely burning electric arcs |
| 10/23/1990 | US4965812 Electrode for a glass melting |
| 10/18/1990 | WO1990012123A1 Method of treatment with plasma and plasmatron |
| 10/16/1990 | US4964114 For an electric arc furnace |
| 09/26/1990 | EP0273975B1 Induction plasma furnace |
| 09/26/1990 | CN2062932U Automatically controlled electrode for electric submesged-are furnace |
| 09/26/1990 | CN1009759B Electrical connection device intended to be placed through the wall of a direct-current metallurgical furnace |
| 09/25/1990 | US4959841 Process for reducing contamination of high temperature melts |
| 09/20/1990 | DE3909333A1 Three-phase arc furnace |
| 09/19/1990 | EP0387344A1 Very high temperature heating device. |
| 09/18/1990 | US4958358 Apparatus for the thermal treatment of a metallic melt |
| 09/12/1990 | EP0386586A2 Direct current arc furnace |
| 09/11/1990 | CA1273898A1 Anti-oxidant barrier for carbon based material |
| 09/05/1990 | CN1045135A Particulate anode paste and process for preparing same |
| 08/28/1990 | CA1273317A1 Method of plasma coating carbon bodies with silicon powder |
| 08/21/1990 | US4951298 Closed remelting furnace having several horizontally movable furnace lower portions |
| 08/21/1990 | CA1273044A1 Arc heating type extra-furnace refining apparatus |
| 08/07/1990 | US4947405 DC arc furnace |
| 08/01/1990 | CN1044304A Boronated carbon products and their production |
| 07/25/1990 | CN1008940B Bottom, particularly for direct current arc furnace |
| 07/24/1990 | CA1271976A1 Self-baking electrode for electric arc furnaces and the like |
| 07/10/1990 | US4941149 Method of melting and/or refining metals and cooling device for the graphite electrode used for the same |
| 07/04/1990 | CN1043557A Electric-thermal smelting-furnace |
| 06/26/1990 | US4936960 Method and apparatus for recovery from low impedance condition during cathodic arc processes |
| 06/20/1990 | CN1043197A Electrode for glass melting furnace |
| 06/13/1990 | EP0372236A2 Electrothermal reduction furnace |
| 06/13/1990 | EP0372111A1 Electrode for a glass melting furnace |
| 06/05/1990 | US4931702 Electric-arc device |
| 06/05/1990 | CA1270025A1 Direct current feeder device for a minimum of two loads with a common |
| 05/30/1990 | EP0370384A2 Dismountable connection of a heavy current cable to a bus bar-type terminal via a contact pocket |
| 05/23/1990 | EP0369642A2 Method of melting materials |
| 05/09/1990 | EP0367372A1 Manufacture of a soderberg electrode incorporating a high carbon-contributing phenolic sacrificial binder |
| 05/03/1990 | WO1990004484A1 Method and device for checking working capacity of plasmatron electrode |
| 05/02/1990 | CN1041858A Air cooling protection of moly electrode and equipment thereof |
| 05/01/1990 | CA1268324A1 Mobile apparatus for cleaning remnants of carbon blocks |
| 04/24/1990 | CA1268200A1 Electrode assembly for electric arc furnaces |
| 04/17/1990 | US4918705 Furnace enclosure having a clear viewpath |
| 04/11/1990 | EP0362253A1 Process for treating liquid metals |
| 04/11/1990 | CN2056003U Automatic fixture for electrode replacement |
| 04/05/1990 | WO1990003674A1 Very high temperature heating device |
| 03/22/1990 | WO1990003095A1 Electric arc generating device |
| 03/22/1990 | DE3831060A1 Process and apparatus for the batchwise firing of graphite electrodes in the first and/or second firing |
| 03/14/1990 | CN1007204B Auto-adjuster for electric arc furnace controled by microprocessor |
| 03/07/1990 | CN1007118B High temp. fixing agent for graphite electrode contact |
| 03/06/1990 | US4907244 Electric reduction furnace |
| 03/06/1990 | US4906811 Process and device for igniting an arc with a conducting plasma channel |
| 03/06/1990 | CA1266378A1 Plasma heated sintering furnace |
| 02/21/1990 | CN2053421U Energy-saving apparatus for electrode holder of crystallization furnace |
| 02/20/1990 | US4903278 Electrode holding and positioning |
| 01/31/1990 | EP0248829B1 Control device for a melt electrode |
| 01/30/1990 | US4897170 High melting novolak resin |
| 01/30/1990 | CA1265179A1 Electrode structure for a bath of molten metal |
| 01/24/1990 | CN1006556B Carbon or graphite bodies with a protective coating and a method for the production thereof |
| 01/16/1990 | US4893895 An improved encased high temperature optical fiber |
| 12/21/1989 | DE3820448A1 Cooled wall element for metallurgical furnaces |
| 12/12/1989 | CA1263883A1 Liquid cooled cover for electric arc furnace |
| 12/06/1989 | CN2048952U Electricity-saving heating stove for mine |
| 12/05/1989 | CA1263679A1 Wall electrode for direct current electric mettallurgical cell |
| 11/30/1989 | WO1989011775A1 Electric arc reactor |
| 11/30/1989 | WO1989011774A1 Wear-resistant electrode for direct current arc furnaces |
| 11/30/1989 | DE3817381A1 Verschleissarme elektrode in gleichstromlichtbogenofen -Wear electrode in DC arc furnace |
| 11/29/1989 | EP0344092A2 Thermal treatment installation for molten metal |
| 11/28/1989 | US4883258 Plasma furnace |
| 11/16/1989 | WO1989011203A1 Electrode bracket for an electric arc furnace |
| 11/14/1989 | US4881239 Fault detection during remelt of electrodes into blocks |
| 11/09/1989 | DE3814261A1 Arc furnace having additional connectable reactance |
| 11/08/1989 | EP0340726A1 Electrode supporting arm for an electric arc furnace |
| 10/18/1989 | CN1036395A Antioxidative protective coating for casbon articles |
| 10/11/1989 | EP0335874A1 Electrode support device |
| 10/05/1989 | DE3810292A1 Device for controlling an arc furnace by hydraulically adjusting the height of the electrode |
| 10/03/1989 | CA1262166A1 Hearth bottom, more particularly for dc arc furnaces |
| 10/03/1989 | CA1262090A1 Device for cutting an electrode casing |
| 09/27/1989 | EP0334007A1 Method for reducing the consumption of graphite electrodes |
| 09/26/1989 | CA1260075A1 Arc-heated plasma lance |
| 09/13/1989 | EP0332569A1 Arc-heating device for ladles or ladle furnaces |
| 09/12/1989 | CA1259367A1 Electric connection device for wall mounting on a direct current metallurgical furnace |
| 08/29/1989 | US4861001 Melting retort and method of melting materials |
| 08/16/1989 | EP0327741A1 Self-baking electrode |
| 08/09/1989 | CN1034652A High temp. fixing agent for graphite electrode junction |
| 08/08/1989 | US4856021 Electric direct-current scrap-melting furnace |
| 08/02/1989 | EP0183631B1 Wall electrode for a metallurgical direct current electrical furnace |
| 08/02/1989 | EP0151576B1 Composite electrode for arc furnace |
| 08/01/1989 | US4853942 Graphite electrode with internal cooling for electric arc furnaces |
| 08/01/1989 | US4853941 D.C. arc furnace having electrically conductive hearth and method for making same |
| 07/25/1989 | US4852120 Cooling apparatus for electric arc furnace electrodes |
| 07/25/1989 | US4852119 Arc exposure monitor |
| 07/19/1989 | CN2041478U Electrode gripper block for arc furnace |
| 06/27/1989 | US4843614 Metallurgical vessel |
| 06/27/1989 | US4843234 Consumable electrode length monitor based on optical time domain reflectometry |
| 06/06/1989 | US4837420 Method and apparatus for conducting current to an electrode in arc welding, arc cutting or the like operations |
| 05/31/1989 | EP0317948A2 Arc exposure monitor |
| 05/30/1989 | CA1254722A1 Method and tool for the freeing of parts held fast together |
| 05/09/1989 | US4829538 Furnace hearth |
| 05/03/1989 | DE3835785A1 Bottom electrode for electric melting furnaces |
| 04/25/1989 | US4824733 Anti-oxidant barrier for carbon based material |
| 04/18/1989 | CA1252820A1 Connection between sections of a carbon or graphite electrode |
| 04/13/1989 | DE3733077A1 Alternating current arc furnace |
| 04/12/1989 | EP0311538A1 Process and apparatus for the continuous and simultaneous graphitisation of long carbonaceous bodies and of carbonaceous grains moving counter-currently |
| 04/11/1989 | US4821284 Scrap-melting process and electric furnace for carrying out the process |
| 04/05/1989 | EP0309583A1 Method of melting and refining metals, and an apparatus for cooling electrodes used therefor |