| Patents for F27B 5 - Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated (2,607) |
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| 12/05/1989 | US4885454 High temperature furnace for oxidizing atmospheres |
| 11/23/1989 | EP0343072A1 Device for heat transmission under vacuum with grains |
| 11/21/1989 | US4882468 Four electrique notamment pour traitement thermique |
| 09/26/1989 | US4869470 Vacuum furnace for heat treatment of metallic workpieces |
| 09/20/1989 | CN2044710U 自动连续真空烧结炉 Automatic continuous vacuum sintering furnace |
| 09/19/1989 | US4867808 Heat treating a metallic workpiece by quenching under cooling gas under above atmospheric pressure and specified circulation rate |
| 09/13/1989 | CN2044341U Dimond tool sintering machine with three-phase equal power |
| 08/23/1989 | EP0329378A2 Vacuum heat treating furnace |
| 08/23/1989 | CN2043331U Spring guide post type electric furnace door tripping device |
| 08/08/1989 | US4854863 Convective heat transfer within an industrial heat treating furnace |
| 08/08/1989 | US4854860 Convective heat transfer within an industrial heat treating furnace |
| 07/25/1989 | US4850860 Radiant wall for heat exchangers, muffle kilns and similar equipment |
| 07/25/1989 | US4850576 Heat treatment of materials |
| 07/12/1989 | CN1033841A Process for heat treatment of metallic workpieces |
| 07/12/1989 | CN1033840A Vacuum furnace for heat treatment of metallic workpieces |
| 07/05/1989 | CN2040623U Sintering ignition thermal insulation furnace |
| 06/21/1989 | EP0321427A2 Heat radiation tube |
| 06/20/1989 | US4840559 Seal arrangement for high temperature furnace applications |
| 06/06/1989 | US4836776 Furnace for heat treatment in vacuo with cooling by a stream of gas |
| 05/16/1989 | US4830342 High pressure sintering furnace |
| 05/09/1989 | US4828490 Furnace for dental workpieces |
| 05/03/1989 | EP0313889A1 Vacuum furnace for the heat treatment of metallic work-pieces |
| 05/03/1989 | EP0313888A1 Method for the heat treatment of metallic work pieces |
| 04/26/1989 | EP0312909A1 Vacuum chamber type furnace |
| 04/12/1989 | CN2035759U Air pressure regulator for carburization |
| 03/15/1989 | EP0306837A1 Electric furnace in particular for thermic treatment |
| 03/08/1989 | CN1003533B Microwave oven with spring door lock |
| 02/28/1989 | US4808788 Oven for the vacuum brazing of aluminum |
| 02/22/1989 | CN2033108U High temperature and high-pressure moly filament furnace |
| 02/21/1989 | US4805405 Power plant with combustion of a fuel in a fluidized bed |
| 02/08/1989 | EP0302121A1 Heating furnace for glass materials for optical fiber and method of manufacturing same |
| 02/08/1989 | CN2032303U Qqick temp.-raising molybdenum silicide high-temp. electric stove |
| 01/24/1989 | US4799881 "Twist-lock" gas nozzle for a heat treating furnace |
| 12/29/1988 | DE3719735A1 Gas-tight furnace, in particular vacuum furnace |
| 12/07/1988 | EP0294066A2 Furnace for sintering ceramics and process for sintering ceramics |
| 12/06/1988 | US4789333 Convective heat transfer within an industrial heat treating furnace |
| 11/29/1988 | US4787844 Seal arrangement for high temperature furnace applications |
| 11/17/1988 | EP0290692A1 Apparatus for heating semiconductor wafers |
| 11/02/1988 | EP0289435A1 Gas-cooled vacuum furnace for thermal treatment |
| 10/26/1988 | CN88101909A Apparatus and method for feeding sintering raw mix |
| 10/26/1988 | CN87209402U Internal-heating multiple-stage continuously-distilling vacuum furnace |
| 10/19/1988 | EP0286636A1 Process and device for drying and/or burning powdery materials. |
| 08/25/1988 | WO1988006145A1 Heating furnace for glass materials for optical fiber and method of manufacturing same |
| 08/17/1988 | CN87212806U Box type resistance furnace made of refractory fibre |
| 08/10/1988 | CN87216120U Heated-air type far-infrared continuous drying oven |
| 08/10/1988 | CN87216119U Far-infrared continuous drying oven |
| 07/27/1988 | EP0275614A1 System for preventing decomposition of silicon carbide articles during sintering |
| 07/26/1988 | US4760584 Hearth support arrangement |
| 06/22/1988 | EP0272163A1 Furnace for vacuum brazing metals such as aluminium and aluminium alloys |
| 06/15/1988 | CN87211144U Combined box type electric furnace line with thin carborundum elements |
| 06/14/1988 | US4750914 Sintering in hydrogen atmosphere |
| 05/18/1988 | EP0267387A1 High temperature vacuum furnace |
| 05/11/1988 | DE3636661A1 Process for reducing metal oxides and plant for carrying out the process |
| 05/10/1988 | CA1236294A1 Temperature gradient furnace for materials processing |
| 04/20/1988 | CN87211768U Wall heating type vacuum heat treatment furnace |
| 04/13/1988 | CN87202176U Apparatus for requlating liquid drops and steadying flow in heat treatment furnacce |
| 03/30/1988 | EP0261278A1 Heating apparatus |
| 03/15/1988 | US4731017 Radiation heating apparatus |
| 02/11/1988 | DE3622668C1 Fluidised bed kiln for the heat treatment of metallic objects |
| 02/10/1988 | EP0255603A2 High pressure sintering furnace |
| 01/20/1988 | EP0253176A2 Method for heat treating steel work pieces |
| 01/14/1988 | DE3627175C1 Muffle or chamber furnace |
| 01/13/1988 | CN86108867B Full-sealing device for feed end of atmospheric control bottom-vibrating furnace |
| 01/07/1988 | EP0251247A1 Power plant with combustion of a fuel in a fluidized bed |
| 12/15/1987 | US4713124 Uniformly |
| 12/12/1987 | CN86210801U Explosion-proof testing device for baking oven |
| 12/01/1987 | US4709904 Vacuum furnace for heat-treating a charge |
| 11/07/1987 | CN86210430U Versatile heat-treatment furnace using solid fuel |
| 11/03/1987 | CA1228704A1 Muffle-furnance for continuous heat treatment of travelling objects |
| 10/27/1987 | US4702696 For heating dental reconstruction products |
| 10/06/1987 | US4698481 Method for preventing decomposition of silicon carbide articles during high temperature plasma furnace sintering |
| 09/30/1987 | EP0239304A2 System for preventing decomposition of silicon carbide articles during sintering |
| 09/09/1987 | CN86207666U Far-infrared radiation and convection complex oven with single heat source |
| 09/09/1987 | CN86207378U Modular high temp. furnace for powder metallurgy |
| 08/19/1987 | CN86206992U Open high-temp. electric furnace |
| 07/15/1987 | EP0228864A2 Process for sintering extruded powder shapes |
| 07/15/1987 | CN86108867A Full-sealing device for feed end of atmospheric control bottom-vibrating furnace |
| 07/14/1987 | US4680451 Apparatus using high intensity CW lamps for improved heat treating of semiconductor wafers |
| 06/18/1987 | WO1987003508A1 Process and device for drying and/or burning powdery materials |
| 05/19/1987 | US4666775 Process for sintering extruded powder shapes |
| 04/29/1987 | CN86106840A Equipment and process for hot kiln sintering |
| 04/14/1987 | CA1220381A1 Feeder for pulverized coal |
| 04/07/1987 | CA1220091A1 Furnace by combustion of pulverized coal |
| 03/10/1987 | US4649002 Furnaces, saturation with silicon gas |
| 02/17/1987 | CA1217923A1 Sagger furnace |
| 01/10/1987 | CN85101507A Motor driver for heater in microwave oven |
| 01/10/1987 | CN85101290A Microwave oven with spring door lock |
| 01/06/1987 | US4634103 Oven equipment for cooling a charge after thermal treatment |
| 12/03/1986 | EP0032939B1 Apparatus and method for processing organic materials |
| 11/12/1986 | CN85103776A 微波炉结构 Microwave structure |
| 11/04/1986 | US4620839 Heat insulator for hot isostatic pressing apparatus |
| 10/01/1986 | EP0196243A2 Temperature gradient furnace for materials processing |
| 09/16/1986 | US4612064 Method for heat-treating a charge using a vacuum furnace |
| 09/09/1986 | US4610435 Industrial furnace for the thermal treatment of metal workpieces |
| 09/02/1986 | US4609035 Temperature gradient furnace for materials processing |
| 07/29/1986 | US4602769 Apparatus for the cooling of articles which have been subjected to an isostatic pressing process |
| 07/09/1986 | CN85203863U Chain sintering furnace filled with n2 and h2 shielding gas |
| 07/01/1986 | US4597736 Method and apparatus for heating semiconductor wafers |
| 06/25/1986 | EP0091935B1 Heating device for open kilns with revolving fire and method for implementing such device |
| 06/24/1986 | US4596922 Heating element |