Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 6, 2007
0Patent Application Number
110867710
Date Filed
March 22, 2005
0Patent Primary Examiner
Patent abstract
A heating device comprises a substrate having a heating surface, a heating element buried in the substrate, a cylindrical member joined to the substrate, and lead wires for supplying current to the heating element. In addition, the thermal conductivity of the substrate is about 1.0 to about 2.0 times the thermal conductivity of the cylindrical member.
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