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Class Information
Number: 432/23
Name: Heating > Processes of heating or heater operation > Controlling flame position or work atmosphere > Establishing or maintaining composition of atmosphere bathing work
Description: Process including a procedure by which a desired chemical makeup of the gaseous material surrounding the work is adjusted or established.

Patents under this class:

Patent Number Title Of Patent Date Issued
8663448 Hydrogen furnace system and method Mar. 4, 2014
8246757 Pyrolysis methods and ovens therefor Aug. 21, 2012
6652271 Combustion in a porous wall furnace Nov. 25, 2003
6506048 Apparatus and method for transferring heat treated parts Jan. 14, 2003
6398546 Combustion in a porous wall furnace Jun. 4, 2002
5772428 Method and apparatus for heat treatment including H.sub.2 /H.sub.2 O furnace region control Jun. 30, 1998
5611476 Solder reflow convection furnace employing flux handling and gas densification systems Mar. 18, 1997
5609481 Direct-fired stratified atmosphere furnace system Mar. 11, 1997
5333776 Atmospheres for brazing aluminum and aluminum alloys Aug. 2, 1994
5211820 Gas analysis system for furnaces and the like May. 18, 1993
4975047 Oven provided with oxygen concentration controls Dec. 4, 1990
4974663 Cross-circulating method and apparatus for autoclave Dec. 4, 1990
4964798 Method and apparatus for quickly purging atmosphere gas from bell furnace Oct. 23, 1990
4963090 Reverse flow furnace/retort system Oct. 16, 1990
4920998 Method and apparatus for controlling flow bias in a multiple zone process May. 1, 1990
4692114 Vapor level control for vapor processing system Sep. 8, 1987
4596526 Batch coil annealing furnace and method Jun. 24, 1986
4579523 Method of operating a controlled atmosphere furnace Apr. 1, 1986
4571273 Process of heating and cooling charges in batch-process industrial furnaces Feb. 18, 1986
4551091 Method for reducing the volume of atmosphere needed to inhibit ingress of ambient oxygen into the furnace chamber of a continuous heat treatment furnace Nov. 5, 1985
4543060 Heat treatment of workpieces Sep. 24, 1985
4526534 Cantilever diffusion tube apparatus and method Jul. 2, 1985
4518349 Cantilevered boat-free semiconductor wafer handling system May. 21, 1985
4490108 Process for reducing the oxygen content of the atmosphere in a heat treatment furnace and heat treatment furnace for carrying out this process Dec. 25, 1984
4488871 Process for producing uneven coloring effects on firing plate-like ceramic material Dec. 18, 1984
4482316 Insulated atmosphere furnace Nov. 13, 1984
4466791 Single vapor condensation soldering facility Aug. 21, 1984
4464845 Method of heat- and moisture treatment of articles, for example, concrete articles, and an apparatus for accomplishing same Aug. 14, 1984
4406618 Method of operating continuous heat treatment furnace for metal strip coils Sep. 27, 1983
4402492 Burner apparatus for molten metal fume suppression Sep. 6, 1983
4398971 Method of heating, holding or heat treatment of metal material Aug. 16, 1983
4391585 Method of operating a continuous ceramic kiln Jul. 5, 1983
4365954 Continuous furnace for firing ceramic articles Dec. 28, 1982
4358305 Method of and apparatus for analyzing atmosphere of a combustion chamber Nov. 9, 1982
4345896 Methods and apparatus for calcining carbonaceous material Aug. 24, 1982
4329142 Method for heat treatment of clay and refractory ware May. 11, 1982
4321031 Method and apparatus for condensation heating Mar. 23, 1982
4272239 Direct heating of heat treat furnace chamber Jun. 9, 1981
4264299 Process and apparatus for controlling losses in volatile working fluid systems Apr. 28, 1981
4255132 Incinerator-heater system Mar. 10, 1981
4238122 Apparatus for annealing steel Dec. 9, 1980
4215265 Method and apparatus for producing ceramic ware Jul. 29, 1980
4149939 Method and apparatus for feeding an oxidant within a furnace enclosure Apr. 17, 1979
4083675 Scrap preheating system Apr. 11, 1978
4009991 Process for producing carbon fibers Mar. 1, 1977
3975142 Heat shield composition Aug. 17, 1976
3958918 Method for elimination of furnace roll pickup marks on silicon containing sheet steel May. 25, 1976
3958920 System for controlling the operation of a multiple hearth furnace May. 25, 1976
3930787 Sintering furnace with hydrogen carbon dioxide atmosphere Jan. 6, 1976

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