| Patents for F27D 7 - Forming, maintaining, or circulating atmospheres in heating chambers (2,811) |
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| 11/29/1989 | CN1037542A Process and apparatus for post combustion |
| 10/04/1989 | EP0335728A2 Method and apparatus for gas lancing |
| 09/27/1989 | EP0334556A1 Improvements relating to furnaces |
| 09/26/1989 | US4870655 Apparatus for recovery of metallics and non-metallics from spent catalysts |
| 09/26/1989 | US4869470 Vacuum furnace for heat treatment of metallic workpieces |
| 09/26/1989 | US4869155 Airflow distribution system for discharging air from a thin plenum, and oven employing same |
| 09/19/1989 | US4867675 Method and apparatus for quickly purging atmosphere gas from bell furnace |
| 09/08/1989 | WO1989008087A1 Firing of ceramic honeycomb structure |
| 09/05/1989 | US4863374 Kiln with ventilation system |
| 08/22/1989 | US4859178 Ingot pusher furnace with means for reducing heat loss |
| 08/22/1989 | US4859175 Apparatus and process for optimizing combustion in chamber-type furnaces for baking carbonaceous blocks |
| 08/15/1989 | US4856576 Zirconium oxide suspended in aqueous gel of zirconyl nitrate and ammonium hydroxide; for painting surfaces of copper crucible |
| 08/15/1989 | CA1258371A1 Air cooled refractory lance |
| 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 |
| 07/19/1989 | EP0324727A1 Control process of the humidity of the atmosphere of a thermal treatment furnace, and installation therefor |
| 07/12/1989 | CN1033840A Vacuum furnace for heat treatment of metallic workpieces |
| 06/15/1989 | DE3838458A1 Arrangement for preventing heat losses and for conveyance in continuous tunnel furnaces |
| 06/13/1989 | US4839904 Apparatus for the melting of metals |
| 06/06/1989 | US4836776 Furnace for heat treatment in vacuo with cooling by a stream of gas |
| 05/16/1989 | US4830608 Baking oven for printed circuit substrates |
| 05/16/1989 | US4829703 Auxiliary flue for furnaces |
| 05/10/1989 | EP0315590A2 Convection cooling vessel for materials exhibiting surfaces |
| 05/09/1989 | US4828609 Method to protect the surface of metal in vertical melting furnaces |
| 05/03/1989 | EP0313889A1 Vacuum furnace for the heat treatment of metallic work-pieces |
| 04/27/1989 | DE3735225C1 Device for heating rods, in particular of plastic |
| 04/26/1989 | EP0312909A1 Vacuum chamber type furnace |
| 04/18/1989 | US4822060 Woven tubular gasket with continuous integral attachment means |
| 04/12/1989 | EP0276225A4 Air slot cooking grill. |
| 04/04/1989 | US4818223 Apparatus for treating workpieces with hot gases including gas distributing means |
| 03/14/1989 | US4812092 Feed hopper for a loading installation of a shaft furnace |
| 03/07/1989 | US4809643 Gas distribution system for muffle-type furnaces |
| 02/28/1989 | US4808788 Oven for the vacuum brazing of aluminum |
| 02/08/1989 | EP0302480A2 Auxiliary flue for furnaces |
| 12/28/1988 | CN88103424A Openable active enclosing device for open circular oven |
| 12/14/1988 | EP0295192A1 Device and process to close the walls of a chamber furnace with progressive heating for heating blocks containing carbon |
| 12/06/1988 | US4789333 Convective heat transfer within an industrial heat treating furnace |
| 11/29/1988 | CA1245462A1 Method and apparatus for batch preparation and feeding into the smelting process |
| 11/09/1988 | EP0290116A2 High temperature plug assembly |
| 11/02/1988 | EP0289435A1 Gas-cooled vacuum furnace for thermal treatment |
| 10/19/1988 | CN88101735A Rotary hearth multi-chamber, multi-purpose furnace system |
| 10/06/1988 | WO1988007589A1 Rotary hearth multi-chamber multi-purpose furnace system |
| 10/05/1988 | CN88101562A Feed hopper for loading installation of shaft furnace |
| 10/04/1988 | US4774896 Slide dampers for a vertical type of apparatus for continuously heat-treating solid waste |
| 09/28/1988 | EP0283869A2 Device to expose to a gas stream objects with flat surfaces in a position which can be traversed |
| 09/20/1988 | US4771711 Furnace |
| 09/13/1988 | US4770108 Two-way vent cap for controlled atmosphere furnace |
| 08/16/1988 | US4763880 Rotary hearth multi-chamber, multi-purpose furnace system |
| 08/16/1988 | CA1240507A1 Device for the uniform application of gas on a plane surface |
| 08/09/1988 | US4762489 Cooling apparatus |
| 08/03/1988 | EP0276225A1 Air slot cooking grill |
| 06/22/1988 | EP0272163A1 Furnace for vacuum brazing metals such as aluminium and aluminium alloys |
| 06/21/1988 | US4752268 Exhaust oven for cathode ray tubes |
| 05/18/1988 | EP0267387A1 High temperature vacuum furnace |
| 05/10/1988 | US4743197 High temperature fan plug apparatus |
| 05/10/1988 | CA1236292A1 Furnace |
| 05/10/1988 | CA1236289A1 Pulse combustion drying apparatus for particulate materials |
| 04/28/1988 | DE3635697A1 Furnace for keeping hot and/or smelting |
| 04/21/1988 | DE3640058C1 Apparatus for producing reduced ceramic products, in particular roof tiles, in a tunnel kiln (furnace) |
| 04/12/1988 | US4736529 Device for the uniform application of gas on a plane surface |
| 03/30/1988 | EP0261278A1 Heating apparatus |
| 03/23/1988 | CN87105538A 炉 Furnace |
| 03/15/1988 | US4730811 For metals |
| 03/08/1988 | US4729735 Vertical air flow ingot pusher furnace |
| 03/03/1988 | DE3629836A1 Method and arrangement for evening out the temperatures of periodically operated furnaces |
| 03/02/1988 | EP0257858A2 Furnace |
| 02/23/1988 | US4726764 Heat treating apparatus and method of operating heat treating apparatus |
| 02/11/1988 | DE3627102A1 Protective casing for devices for the heat treatment of workpieces |
| 02/10/1988 | CN86200520U Fire-sealing device for atmosphere-protecting furnace |
| 02/04/1988 | DE3641092C1 Charging device for a melting furnace for melting down lumpy radioactive metallic waste |
| 02/02/1988 | US4722286 Oven with means to establish a uniform temperature profile |
| 01/28/1988 | WO1988000681A1 Air slot cooking grill |
| 01/26/1988 | US4721462 Active hold-down for heat treating |
| 01/20/1988 | EP0253024A1 Reversible cross flow drying or curing oven |
| 01/13/1988 | EP0252856A1 Process and device to optimize the firing in an open chamber furnace for burning carbonaceous blocks |
| 01/12/1988 | US4719333 Firing of ceramic ware |
| 01/06/1988 | CN87104218A Combustion apparatus and process for baking block carbon in chamber |
| 12/30/1987 | WO1987007938A1 Device and method for optimizing combustion in open chamber furnaces for firing carbon blocks |
| 12/29/1987 | US4715584 Furnace for melting metals |
| 11/24/1987 | US4708640 Apparatus for batch preparation and feeding into the smelting process |
| 11/19/1987 | EP0245630A1 Cooling apparatus |
| 11/18/1987 | CN87101549A Adjustable calorific balance heating plant |
| 11/17/1987 | US4706943 Connection device for plasma generators |
| 11/10/1987 | US4705474 Method and apparatus for batch preparation and feeding into the smelting process |
| 10/27/1987 | US4702696 For heating dental reconstruction products |
| 08/12/1987 | CN86206462U Directly baking furnace with heat of circulating and regenerating exausting gas |
| 07/16/1987 | DE3600550A1 Blow-in nozzle |
| 07/07/1987 | CA1223714A1 Replaceable seals for ladle heaters |
| 06/30/1987 | US4676743 Vertical air flow ingot pusher furnace |
| 05/20/1987 | CN86104946A Protective heating method used for circulating purification outside industrial electric furnace |
| 04/22/1987 | EP0219235A2 Improved pulse combustion drying apparatus for particulate materials |
| 04/16/1987 | DE3536155A1 Chamber furnace with gas circulation |
| 04/01/1987 | CN86106511A Gas collector for metallurgical vessels |
| 03/31/1987 | US4653732 Multi-chamber vacuum furnace for heat-treating metal articles |
| 03/24/1987 | US4653064 Gas collector for metallurgical vessels |
| 03/11/1987 | CN86105529A Cement products preliminary treatment equipment |
| 02/17/1987 | US4643402 System for producing a regulated atmosphere for a high-temperature process |
| 02/03/1987 | US4640682 Pulse jet combustor dehydration cone construction |
| 01/20/1987 | US4637794 Pulse combustion drying apparatus for particulate materials |
| 12/16/1986 | US4628616 Vapor tank |