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Class Information
Number: 373/157
Name: Industrial electric heating furnaces > Induction furnace device > Coreless > Crucible > Conducting (e.g., graphite)
Description: Subject matter wherein the crucible is constructed of material which allows the flow of electric current.

Patents under this class:

Patent Number Title Of Patent Date Issued
7796674 Cold crucible induction furnace Sep. 14, 2010
7792178 Induction furnace for melting granular materials Sep. 7, 2010
7113535 Induction furnace for melting granular materials Sep. 26, 2006
6898232 Induction furnace for high temperature operation May. 24, 2005
6741632 Ultra high temperature rapid cycle induction furnace May. 25, 2004
6724803 Induction furnace for high temperature operation Apr. 20, 2004
6600769 Device and method for manufacturing a preform Jul. 29, 2003
6568215 Method and apparatus for melting a particulate material May. 27, 2003
5970083 Device for injecting non-oxidizing gas into a furnace Oct. 19, 1999
5848093 Fiber-drawing furnace for drawing down an optical-fiber preform into an optical fiber Dec. 8, 1998
5636241 Levitation melting crucibles Jun. 3, 1997
5502743 High temperature furnace Mar. 26, 1996
5272720 Induction heating apparatus and method Dec. 21, 1993
5260538 Device for the magnetic inductive heating of vessels Nov. 9, 1993
5257281 Induction heating apparatus and method Oct. 26, 1993
5109389 Apparatus for generating an inductive heating field which interacts with metallic stock in a crucible Apr. 28, 1992
5087490 Method for making an impregnated ceramic material Feb. 11, 1992
5058127 Bottom discharge cold crucible Oct. 15, 1991
4888242 Graphite sheet material Dec. 19, 1989
4838933 Apparatus for melting and continuous casting of metals, the process involved and use of the apparatus Jun. 13, 1989
4761528 High frequency induction melting furnace Aug. 2, 1988
4666681 Apparatus for producing a monocrystal May. 19, 1987
4660212 Cold cage for a melting crucible by high frequency electromagnetic induction Apr. 21, 1987
4563558 Directional recrystallization furnace providing convex isotherm temperature distribution Jan. 7, 1986
4539645 Automated sample analyzer for induction furnace analysis Sep. 3, 1985
4503304 Inductive heating device having a plurality of heating coil units Mar. 5, 1985
4469925 Inductive heating device utilizing a heat insulator Sep. 4, 1984
4446563 Composite crucible May. 1, 1984
4432093 Melting device by direct induction in a cold cage with supplementary electromagnetic confinement of the load Feb. 14, 1984
4409451 Induction furnace having improved thermal profile Oct. 11, 1983
4201882 Induction melting furnace May. 6, 1980
4142063 High-frequency electric furnace Feb. 27, 1979
4055391 Crucible Oct. 25, 1977
3980854 Graphite susceptor structure for inductively heating semiconductor wafers Sep. 14, 1976

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