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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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Class Information
Number: 373/111
Name: Industrial electric heating furnaces > Resistance furnace device > With internal atmosphere control (e.g., pressure, vacuum, etc.) > Having tubular charge containing or supporting element
Description: Subject matter wherein the means holding, or holding up the charge has a cylindrical shape.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8487220 Vacuum oven Jul. 16, 2013
8134100 Heat processing furnace and method of manufacturing the same Mar. 13, 2012
7864829 Dropping model electrostatic levitation furnace Jan. 4, 2011
7838802 Radiation apparatus with capability of preventing heat convection Nov. 23, 2010
7619187 Porous ceramic heating element and method of manufacturing thereof Nov. 17, 2009
7598477 Vacuum muffle quench furnace Oct. 6, 2009
7531769 Carbon fiber composite muffle May. 12, 2009
7202448 Device for firing ceramic for dental prostheses Apr. 10, 2007
7156979 Thermal cracking process using tubes, pipes, and coils made of novel stainless steel matrix Jan. 2, 2007
7148450 Portable blackbody furnace Dec. 12, 2006
7006552 Resistance furnace with tubular heating element Feb. 28, 2006
6872918 Multiple zone autoclaves Mar. 29, 2005
6422861 Quartz fusion furnace and method for forming quartz articles Jul. 23, 2002
6365877 Blackbody furnace Apr. 2, 2002
6268590 Apparatus and method for continuous retorting of mercury from ores and others mercury contaminated materials Jul. 31, 2001
6250799 Thermal analyzing apparatus Jun. 26, 2001
6157667 Method and calcining furnace for electric calcining of carbonaceous material Dec. 5, 2000
6083625 Curved graphite furnace elements Jul. 4, 2000
6031207 Sintering kiln Feb. 29, 2000
5912080 Shaped graphite elements fabricated from thin graphite sheets Jun. 15, 1999
5903591 Apparatus and process for activation of carbonaceous char or reactivation of spent carbon by electrical resistance heating May. 11, 1999
5869810 Impedance-heated furnace Feb. 9, 1999
5848093 Fiber-drawing furnace for drawing down an optical-fiber preform into an optical fiber Dec. 8, 1998
5838716 Leak check procedure for a dry oxidation furnace tube Nov. 17, 1998
5703901 Calcination furnace Dec. 30, 1997
5698158 Vacuum distillation apparatus for producing ultra high purity material Dec. 16, 1997
5579334 Method and apparatus for reacting solid particulate reagents in an electric furnace Nov. 26, 1996
5573689 Fluidized bed reactor for preparing metal nitride Nov. 12, 1996
5559826 Calcination furnace Sep. 24, 1996
5555259 Process and device for melting down of scrap Sep. 10, 1996
5524020 Vacuum furnace with movable hot zone Jun. 4, 1996
5414927 Furnace elements made from graphite sheets May. 16, 1995
5406579 Dynamic seal Apr. 11, 1995
5298196 Method and apparatus for extracting tritium and preparing radioactive waste for disposal Mar. 29, 1994
5287383 Method and apparatus for producing active carbon using carbon-containing material Feb. 15, 1994
5251231 Vacuum furnace Oct. 5, 1993
5222074 Thermal decomposition cell Jun. 22, 1993
5206880 Furnace having tubes for cracking hydrocarbons Apr. 27, 1993
5173921 Apparatus and process for activation of carbon by electrical resistance heating in the presence of steam Dec. 22, 1992
4804633 Silicon-on-insulator substrates annealed in polysilicon tube Feb. 14, 1989
4734127 Process and apparatus for refining aluminum Mar. 29, 1988
4601887 Apparatus for improving the degree of graphitization of carbon black, and its use Jul. 22, 1986
4542513 Heater for hot isostatic pressing apparatus Sep. 17, 1985
4509179 Vacuum sintering and hot isostatic pressing in the same vessel Apr. 2, 1985
4429403 Heating element insulating and support system Jan. 31, 1984
4423516 Dynamic gradient furnace with controlled heat dissipation Dec. 27, 1983
4416623 Muffle furnace Nov. 22, 1983
4347431 Diffusion furnace Aug. 31, 1982
4286111 Apparatus for interconnecting a power supply to an electrode within a chamber containing fluid maintained at a high temperature and pressure Aug. 25, 1981
4286142 Electric tube furnace Aug. 25, 1981

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