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Class Information
Number: 373/156
Name: Industrial electric heating furnaces > Induction furnace device > Coreless > Crucible
Description: Subject matter including means to contain the charge while the charge is being heated.

Sub-classes under this class:

Class Number Class Name Patents
373/157 Conducting (e.g., graphite) 34

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8532158 Melting and mixing of materials in a crucible by electric induction heel process Sep. 10, 2013
8323981 Induction furnace operating in a range from 2-9 MHz for providing analytical samples and method of same Dec. 4, 2012
8320427 Cold walled induction guide tube Nov. 27, 2012
7792178 Induction furnace for melting granular materials Sep. 7, 2010
7730745 Vitrification furnace with dual heating means Jun. 8, 2010
7503188 Vitrification furnace with dual heating means Mar. 17, 2009
7336692 Induction furnace for melting semi-conductor materials Feb. 26, 2008
7137277 Method and device for producing colored glasses Nov. 21, 2006
7113535 Induction furnace for melting granular materials Sep. 26, 2006
7010941 Coating of cooled devices Mar. 14, 2006
6996153 Core-type furnace Feb. 7, 2006
6817212 Skull pot for melting or refining glass or glass ceramics Nov. 16, 2004
6798821 Method and apparatus for solidification-controllable induction melting of alloy with cold copper crucible Sep. 28, 2004
6793894 Pyrochemical reprocessing method for spent nuclear fuel and induction heating system to be used in pyrochemical reprocessing method Sep. 21, 2004
6768766 Precast one piece upper castable ring for induction furnaces Jul. 27, 2004
6757317 Device for melting or purifying of inorganic sustances Jun. 29, 2004
6577667 Skull pot for melting or refining inorganic substances Jun. 10, 2003
6568215 Method and apparatus for melting a particulate material May. 27, 2003
6557620 Attachment apparatus for heater May. 6, 2003
6507599 Induction heating furnace and bottom tapping mechanism thereof Jan. 14, 2003
6507598 Induction heating furnace and bottom tapping mechanism thereof Jan. 14, 2003
6400749 Induction heating Jun. 4, 2002
6393044 High efficiency induction melting system May. 21, 2002
6307875 Induction heating furnace and bottom tapping mechanism thereof Oct. 23, 2001
6304590 Formation of metal wire Oct. 16, 2001
6226314 Assembly of a tapping device and a cooled inductor May. 1, 2001
6219372 Guide tube structure for flux concentration Apr. 17, 2001
6214286 Hybrid induction skull melting Apr. 10, 2001
6185243 Glass induction melting furnace using a cold crucible Feb. 6, 2001
6163562 Induction oven for melting metals Dec. 19, 2000
6144690 Melting method using cold crucible induction melting apparatus Nov. 7, 2000
6101212 Sealed evacuatable crucible for inductive melting or superheating Aug. 8, 2000
6097750 Electroslag refining hearth Aug. 1, 2000
5997802 Directly susceptible, noncarbon metal ceramic composite crucible Dec. 7, 1999
5992503 Systems and methods for maintaining effective insulation between copper segments during electroslag refining process Nov. 30, 1999
5991328 Crucible for the inductive melting or superheating of metals, alloys, or other electrically conductive materials Nov. 23, 1999
5901169 Apparatus for discharging molten matter from cold crucible induction melting furnace May. 4, 1999
5896410 Compact furnace design Apr. 20, 1999
5889813 Levitation melting furnace Mar. 30, 1999
5809057 Electroslag apparatus and guide Sep. 15, 1998
5677926 Crucible for the inductive melting of metals Oct. 14, 1997
5668827 Crucible for induction melting Sep. 16, 1997
5636241 Levitation melting crucibles Jun. 3, 1997
5563904 Process for melting an electroconductive material in a cold crucible induction melting furnace and melting furnace for carrying out the process Oct. 8, 1996
5528620 Levitating and melting apparatus and method of operating the same Jun. 18, 1996
5479438 Apparatus for fusing a solid layer of electrically conductive material Dec. 26, 1995
5469461 Electric induction furnace Nov. 21, 1995
5425048 Heating apparatus for induction ladle and vacuum furnaces Jun. 13, 1995
5416796 Float melting apparatus and method employing axially movable crucibles May. 16, 1995
5416793 Induction melting apparatus sealed against the atmosphere May. 16, 1995

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