| Patents for F27B 9 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity (7,954) |
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| 08/21/1990 | US4950334 Gas carburizing method and apparatus |
| 08/16/1990 | DE3936919A1 Furnace brazing of motor vehicle radiators - involves furnace with baffle plate to protect radiator from flow of circulating air |
| 08/14/1990 | US4948362 Energy conserving process for calcining clay |
| 08/08/1990 | EP0381587A1 Continuous-sintering furnace |
| 08/01/1990 | CN2059916U Rolling furnace for producing sic |
| 07/31/1990 | US4944383 Furnace charger apparatus |
| 07/24/1990 | CA1271950A1 Modular oven |
| 07/17/1990 | US4942002 Process for converting carbon blanks into graphite electrodes |
| 07/17/1990 | US4941823 Vertical air flow ingot pusher furnace with adjustable side baffles |
| 07/11/1990 | EP0377531A1 Vessel for the thermal treatment of objects |
| 07/10/1990 | US4940408 For firing molded ceramic green product |
| 07/05/1990 | DE3841920C1 Installation for baking glazed stoneware pipes |
| 07/03/1990 | US4938690 Ingot pusher furnace with rail drawbridges |
| 07/03/1990 | US4938689 Furnace for firing wire-like products |
| 06/28/1990 | DE3942609A1 Thermal processing of insulated wire - having insulation burned off from wire in continuous process |
| 06/28/1990 | DE3844021A1 Tunnel furnace |
| 06/27/1990 | CN1043385A Stove for heating, insulating and store of metallurgical products |
| 06/26/1990 | US4936771 Skid mark erasure system |
| 06/19/1990 | US4934929 Method and apparatus for high temperature surface treatment of materials |
| 06/14/1990 | WO1990006379A1 Furnace for reheating, holding and storing steelworks products |
| 06/13/1990 | EP0372164A2 Continuous furnace, especially for soldering electronic components |
| 06/13/1990 | EP0372128A1 Tunnel kilns |
| 06/13/1990 | DE3843002A1 Method and heating furnace for heating billets, ingots, slabs, sheets and similar products to be heated |
| 06/12/1990 | US4933023 Method for manufacture of non-allergy creating precious metal objects |
| 06/12/1990 | US4932864 Roller hearth type heat treating furnace |
| 05/31/1990 | WO1990005586A1 Energy conserving process for calcining clay |
| 05/31/1990 | DE3839773A1 Continuous casting installation with a downstream rolling mill |
| 05/30/1990 | EP0370916A1 Furnace for reheating, holding and storing of metallurgical products |
| 05/29/1990 | US4929177 Transfer apparatus for laterally transferring kiln cars between tunnel kilns |
| 05/25/1990 | CA2003834A1 Steel products heating, keeping and accumulating oven |
| 05/17/1990 | WO1990005273A1 A firing and drying furnace for ceramic mouldings, especially green bricks |
| 05/16/1990 | EP0368033A1 Device for the control of the gas pulse burners in a tunnel furnace |
| 05/09/1990 | CN2056992U Roller tunnel kiln suing coal as fuel |
| 05/09/1990 | CN2056991U Trolley-type electric heating stove used in industry |
| 05/09/1990 | CN1042005A Tunnel furnace bottom pressure-sharing technology |
| 05/09/1990 | CN1007925B Self-preheating type volumetric heat oven |
| 05/08/1990 | US4923397 Flat separation floor between two superposed chambers in kilns, in particular roller-hearth kilns for ceramic tiles |
| 05/08/1990 | US4923206 Trolley transfer unit for tunnel furnace |
| 05/01/1990 | US4921422 Method for controlling the preheating zone of a tunnel kiln |
| 05/01/1990 | US4920998 Method and apparatus for controlling flow bias in a multiple zone process |
| 04/26/1990 | DE3842290C1 Heating furnace for billets, ingots, slabs, rough strips and similar products to be heated |
| 04/26/1990 | DE3835594A1 Downdraught firing method and device for firing roof tiles |
| 04/25/1990 | EP0365260A2 Apparatus and method for the production of oxides of lead |
| 04/25/1990 | CN1041576A Process of graphitization of carbon elements and background of invention for apparatus |
| 04/24/1990 | US4919867 Method for sintering high temperature ceramics |
| 04/24/1990 | US4918803 Plant for rolling long products from billets and blooms coming from a plurality of continuous casting lines |
| 04/19/1990 | DE3908758C1 Tunnel furnace for baking light bricks |
| 04/19/1990 | DE3835360A1 Tunnel furnace |
| 04/19/1990 | DE3834836A1 Apparatus for removing gaseous media from furnaces for treating ceramic material |
| 04/19/1990 | DE3834835A1 Apparatus for heating and/or cooling chambers, in particular in furnaces for treating ceramic products |
| 04/19/1990 | DE3834795A1 Industrieofen Industrial furnace |
| 04/19/1990 | DE3546516C2 Oven |
| 04/18/1990 | EP0286636B1 Process and device for drying and/or burning powdery materials |
| 04/18/1990 | CN1041443A Tunnel kiln for production of artificial graphite electrodes |
| 04/17/1990 | US4917600 Reciprocal furnace for heating metal parts |
| 04/05/1990 | DE3831558A1 Method and continuous furnace for the removal of pollutants from exhaust gases |
| 04/04/1990 | EP0361147A1 Continuous heat treatment furnace for articles, particularly for ceramic tubes |
| 04/04/1990 | EP0361058A1 Furnace plant to heat and reheat strip |
| 03/28/1990 | EP0359977A2 Heat treating furnace for a bloom casting installation |
| 03/28/1990 | EP0359756A1 Rotary hearth multi-chamber multi-purpose furnace system |
| 03/27/1990 | US4912301 Apparatus and method for the production of oxides of lead |
| 03/27/1990 | US4911681 Ceramic conveyor belt connector rod end fixation |
| 03/14/1990 | EP0357789A1 Process of producing a ceramic honeycomb structural body |
| 03/14/1990 | CN1040430A New-type head and tail spiders for sintering machine |
| 03/14/1990 | CN1007177B Forced circulation furnace |
| 03/07/1990 | EP0232346B1 Oven with movable beams |
| 03/07/1990 | CN1040264A Refractory elements for construction of heat regenerators |
| 03/06/1990 | US4906183 Treatment of expansible materials to form lightweight aggregate |
| 02/28/1990 | EP0355569A2 Tunnel furnace for burning materials containing flammable ingredients |
| 02/28/1990 | EP0355520A2 Method of heat treating workpieces |
| 02/28/1990 | EP0355361A2 Graphitisation process of carbon slabs in grahite electrodes |
| 02/27/1990 | US4903824 For use at a high temperature |
| 02/21/1990 | CN1039743A Plant to roll flat products |
| 02/20/1990 | US4902342 Method for the manufacture of non-allergy creating precious metal objects |
| 02/14/1990 | EP0354844A1 Refractory elements for making thermal regenerators |
| 02/14/1990 | CN1006780B Support frame for resistor elements in heating furnace for glass sheets |
| 02/13/1990 | US4900247 High-temperature heating furnace |
| 02/08/1990 | WO1990001136A1 Method for cooling ceramics, especially ceramic tiles produced in roller kilns, and the relative plant |
| 02/07/1990 | EP0354203A2 Process and apparatus for graphitizing shaped carbon articles |
| 02/07/1990 | EP0353860A2 Expanded mineral particles and apparatus and method of production |
| 02/07/1990 | EP0353487A1 Plant to roll flat products |
| 02/06/1990 | US4898534 Apparatus and process for firing ceramics |
| 02/01/1990 | DE3825859A1 Annealing muffle with a round profile |
| 01/31/1990 | EP0352533A2 Device for the transport of strip metal, particularly high grade strip metal, in the furnaces of annealing or pickling lines |
| 01/30/1990 | US4897034 For firing shaped bodies |
| 01/24/1990 | EP0352053A1 Clayware pipe manufacture |
| 01/24/1990 | CN1039105A Roller for transpting steel metallurgical products moving in stove |
| 01/24/1990 | CN1039104A Stove |
| 01/17/1990 | EP0351308A1 Temperature control process for an open-ended tunnel furnace, and device for carrying it out |
| 01/16/1990 | US4894517 Shrinking apparatus |
| 01/11/1990 | DE3822883A1 Continuous furnace |
| 01/10/1990 | EP0350146A1 Walking beam furnace insulation |
| 01/03/1990 | EP0348603A2 Control system for a counter-current operated tunnel furnace |
| 01/02/1990 | US4890563 Treatment of waste and rotary kiln therefor |
| 12/26/1989 | US4889483 Temperature controlled probe assembly |
| 12/26/1989 | US4889070 System for the treatment of edge supported substrates |
| 12/19/1989 | US4888143 Exposure to rapid changes in temperature |
| 12/14/1989 | WO1989012208A1 Roller for the handling of metallurgical products moved inside a furnace |
| 12/13/1989 | EP0346117A1 Improved heating system in the manufacture of printed circuit boards, assemblies and the like |
| 12/12/1989 | US4886450 Cooled tubular assembly for industrial reheating furnace |