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Class Information
Number: 373/115
Name: Industrial electric heating furnaces > Resistance furnace device > Charging or discharging
Description: Subject matter including devices for supplying the charge into the furnace, or taking the charge out of the furnace.

Patents under this class:

Patent Number Title Of Patent Date Issued
8317897 Method for supersonically injecting oxygen into a furnace Nov. 27, 2012
6700918 Electric furnace for the production of metal oxides Mar. 2, 2004
6660219 Method and device for emptying metallurgic melting vessels by tipping Dec. 9, 2003
6268590 Apparatus and method for continuous retorting of mercury from ores and others mercury contaminated materials Jul. 31, 2001
6219370 Channel arrangement Apr. 17, 2001
6206941 Apparatus and process for carbonization and activation of carbonaceous materials Mar. 27, 2001
6157667 Method and calcining furnace for electric calcining of carbonaceous material Dec. 5, 2000
5974076 Apparatus for activation of carbonaceous char or reactivation of spent carbon by electrical resistance heating Oct. 26, 1999
5903591 Apparatus and process for activation of carbonaceous char or reactivation of spent carbon by electrical resistance heating May. 11, 1999
5812587 Apparatus and method for the supply of molten metal Sep. 22, 1998
5715272 Device for charging an electric furnace Feb. 3, 1998
5694413 Procedure and apparatus for continuous supply of heat in electrically conductive bulk goods Dec. 2, 1997
5544195 High-bandwidth continuous-flow arc furnace Aug. 6, 1996
5462259 Tilting device for a D.C. arc furnace and process for emptying the furnace Oct. 31, 1995
5406582 Apparatus and process for activation and reactivation of carbon by electrical resistance heating in the presence of steam Apr. 11, 1995
5377220 Apparatus for drying of granular or powdered carbon by electrical resistance heating Dec. 27, 1994
5341394 Furnace for melting materials with low melting point with improved casting duct Aug. 23, 1994
5317592 Direct resistance heating electrical furnace assembly and method of operating same May. 31, 1994
5299225 Graphitization furnace Mar. 29, 1994
5287383 Method and apparatus for producing active carbon using carbon-containing material Feb. 15, 1994
5265118 Silicon carbide whisker production apparatus Nov. 23, 1993
5190901 Method for producing active carbon using carbon-containing material Mar. 2, 1993
5173921 Apparatus and process for activation of carbon by electrical resistance heating in the presence of steam Dec. 22, 1992
5089457 Process for activation of carbon by electrical resistance heating in the presence of steam Feb. 18, 1992
5057287 Liquid encapsulated zone melting crystal growth method and apparatus Oct. 15, 1991
5044860 Analysis of organic material Sep. 3, 1991
4668287 Process for producing high purity zirconium and hafnium May. 26, 1987
4624003 Apparatus for heating electrically conductive bulk materials Nov. 18, 1986
4475207 Graphitization furnace loading apparatus Oct. 2, 1984
4430055 Semi-continuous vacuum heat-treating furnace, and its operation process Feb. 7, 1984
4422174 Shaft furnace for heat treatment of materials Dec. 20, 1983
4399546 Silicon carbide furnace Aug. 16, 1983
4394766 Graphitization system method and apparatus Jul. 19, 1983
4371971 Sample loading mechanism Feb. 1, 1983
4357210 Electric furnace for the calcination of carbonaceous materials Nov. 2, 1982
4337373 Furnace for fusing vanadium pentoxide powder Jun. 29, 1982
4269398 Means for reclaiming galvanizing quality zinc alloy from continuous galvanizing line top dross May. 26, 1981
4127737 Apparatus for reactivation of active carbon and the like Nov. 28, 1978
4003697 Pressure furnace for treating products at high temperature and high pressure Jan. 18, 1977
3940245 Convection shield for isostatic bonding apparatus Feb. 24, 1976

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