| Patents for F27D 11 - Arrangement of elements for electric heating in or on furnaces (4,538) |
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| 01/29/1991 | US4988848 Ceramic heater element for dual zone sprue bushing |
| 01/23/1991 | CN1011376B Directional electric arc heating device |
| 01/10/1991 | WO1991000487A1 Melting unit for metal melting induction furnace |
| 01/06/1991 | CA2012238A1 Furnace enclosure having a clear viewpath |
| 01/01/1991 | US4982411 Wall electrode for direct current powered electric arc furnace |
| 12/19/1990 | EP0403035A2 Method for attaining a temperature in a metal bath |
| 12/18/1990 | CA1278008C Electric arc melting apparatus and associated method |
| 12/04/1990 | US4975563 Heating devices |
| 11/28/1990 | EP0399306A2 Tightening and fastening device of heating conductors on electrically heated vacuum furnaces |
| 11/17/1990 | WO1990014741A1 A plant for conductive electrical heating of steel blanks |
| 11/14/1990 | EP0397565A1 Method for separation of inclusions in metals by remelting |
| 11/13/1990 | US4970372 Furnace for the thermal treatment of iron and steel components |
| 10/31/1990 | EP0395286A2 Induction melting of metals without a crucible |
| 10/18/1990 | WO1990012266A1 Vacuum furnace |
| 10/18/1990 | WO1990010086A3 Melting aggregate with shaft for preheating charged materials |
| 10/17/1990 | EP0392068A1 Vacuum induction furnace |
| 09/26/1990 | EP0273975B1 Induction plasma furnace |
| 09/26/1990 | CN1045642A Smelting plant with shaft-like material preheater |
| 09/26/1990 | CN1009759B Electrical connection device intended to be placed through the wall of a direct-current metallurgical furnace |
| 09/19/1990 | EP0388255A1 Arc furnace and process for smelting scrap |
| 09/18/1990 | US4958358 Apparatus for the thermal treatment of a metallic melt |
| 09/15/1990 | CA2012080A1 Electric arc furnace and scrap iron melting process |
| 09/12/1990 | EP0386586A2 Direct current arc furnace |
| 09/05/1990 | EP0385434A2 Smelting unit with a shaft for charging and preheating the charge |
| 09/05/1990 | EP0384987A1 Method and apparatus for continuously heating and melting material |
| 09/05/1990 | CN2061750U Infrared electric range |
| 09/03/1990 | WO1990010086A2 Melting aggregate with shaft for preheating charged materials |
| 08/21/1990 | US4950870 Heat-treating apparatus |
| 08/16/1990 | EP0381948A1 Furnace for the electrothermal atomisation of samples in atomic absorption spectroscopy |
| 08/08/1990 | EP0381587A1 Continuous-sintering furnace |
| 07/26/1990 | DE3903650A1 Electric resistance furnace with a directly heated muffle |
| 07/25/1990 | CN1008940B Bottom, particularly for direct current arc furnace |
| 07/17/1990 | US4941916 Sublimation |
| 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 |
| 07/03/1990 | US4938866 Conveyor residue removal apparatus |
| 06/13/1990 | EP0372236A2 Electrothermal reduction furnace |
| 05/31/1990 | DE3839970A1 Furnace having a dynamic temperature gradient |
| 05/23/1990 | EP0369642A2 Method of melting materials |
| 05/08/1990 | CA1268626A1 Movable graphitizing furnaces |
| 04/18/1990 | EP0364008A2 Heating devices |
| 04/17/1990 | US4918705 Furnace enclosure having a clear viewpath |
| 04/10/1990 | US4916714 Movable graphitizing furnace |
| 03/22/1990 | WO1990003095A1 Electric arc generating device |
| 03/07/1990 | EP0357053A2 Apparatus and method for melting and homogenizing batch material |
| 03/06/1990 | CA1266378A1 Plasma heated sintering furnace |
| 02/22/1990 | DE3833508C1 Furnace for the hot extraction of gases contained in solid samples |
| 02/14/1990 | CN1006779B Resistor element assembly for heating furnace of glass sheets and method of replacing resistor element |
| 02/13/1990 | US4899435 Sprue bushing assembly and method of making same |
| 01/31/1990 | EP0248829B1 Control device for a melt electrode |
| 01/30/1990 | US4897112 Using microwaves |
| 01/17/1990 | CN1038873A Circularly conducted dc-ore-heating furnace |
| 01/17/1990 | CN1038872A Three-electrode ac/dc smelting furnace |
| 01/04/1990 | DE3822475A1 Heating system for high-temperature rotary tubular kilns |
| 12/13/1989 | CN2049337U Composition electric resistance furnace |
| 12/12/1989 | US4887277 Electric arc furnace |
| 12/12/1989 | CA1263882A1 Channel inductor block for channel induction furnace and method of making same |
| 12/06/1989 | EP0344413A1 Furnace for the heat treatment of iron and steel parts |
| 12/06/1989 | EP0240527B1 Method for producing moulded coke by electric heating in a shaft furnace and shaft furnace for producing such coke and electric heating method by means of a fluid conducting granulated bed |
| 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 | 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 |
| 11/21/1989 | US4882469 Internally heated sprue bushing assembly with a unitary bushing casing core element |
| 10/10/1989 | US4873423 High temperature heating furnace |
| 10/03/1989 | CA1262166A1 Hearth bottom, more particularly for dc arc furnaces |
| 10/03/1989 | CA1262090A1 Device for cutting an electrode casing |
| 09/26/1989 | US4870655 Apparatus for recovery of metallics and non-metallics from spent catalysts |
| 09/26/1989 | US4870256 Graphite holding elements for heating bars in industrial furnaces |
| 09/26/1989 | US4869470 Vacuum furnace for heat treatment of metallic workpieces |
| 09/26/1989 | CA1260075A1 Arc-heated plasma lance |
| 09/19/1989 | US4867848 Process and apparatus for producing moulded coke in a vertical furnace which is at least partly electrically heated |
| 09/14/1989 | DE3906490A1 Heizvorrichtung fuer laengliche prueflinge Heater for elongated specimens |
| 09/12/1989 | CA1259367A1 Electric connection device for wall mounting on a direct current metallurgical furnace |
| 08/29/1989 | US4862477 Apparatus and method for melting and homogenizing batch material |
| 08/23/1989 | EP0329378A2 Vacuum heat treating furnace |
| 08/08/1989 | US4856021 Electric direct-current scrap-melting furnace |
| 08/02/1989 | EP0183631B1 Wall electrode for a metallurgical direct current electrical furnace |
| 08/01/1989 | US4853941 D.C. arc furnace having electrically conductive hearth and method for making same |
| 07/26/1989 | CN2041799U Gap bridge iron melt heating means and device to coke cupola furnace |
| 07/18/1989 | US4849608 Apparatus for heat-treating wafers |
| 07/18/1989 | US4849014 Molten metal heating method |
| 07/12/1989 | CN1033840A Vacuum furnace for heat treatment of metallic workpieces |
| 06/27/1989 | US4843614 Metallurgical vessel |
| 06/21/1989 | EP0321427A2 Heat radiation tube |
| 05/31/1989 | EP0317832A1 Multi-tier load fixture for a top-loading furnace |
| 05/31/1989 | CN2038617U Random heat-preserving time controller for electric furnace |
| 05/09/1989 | US4829538 Furnace hearth |
| 05/03/1989 | EP0313889A1 Vacuum furnace for the heat treatment of metallic work-pieces |
| 05/03/1989 | DE3835785A1 Bottom electrode for electric melting furnaces |
| 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 |
| 04/05/1989 | CN2035453U Ore hearth |
| 03/28/1989 | US4815971 Multi-tier load fixture for a top-loading furnace furnace |
| 03/09/1989 | WO1989002211A1 Graphite electrode holder for electric furnace |
| 03/01/1989 | EP0304429A1 Movable graphitizing furnace. |
| 03/01/1989 | CN2033490U Whirl flow type d.c mine heating furnace |
| 02/21/1989 | US4807246 Apparatus for treatment of particulate material |
| 02/14/1989 | US4805186 Process for the continuous melting of scrap in an electric direct-current furnace and electric furnace for carrying out the process |