US Patent 7173220 Heating device
Patent 7173220 was granted and assigned to NGK Insulators on February, 2007 by the United States Patent and Trademark Office.
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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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Current Assignee
Patent Jurisdiction
Patent Number
71732200
Date of Patent
February 6, 2007
0Patent Application Number
110867710
Date Filed
March 22, 2005
0Patent Primary Examiner
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Official Website
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US Patent 07173220 Heating device US Patent 7173220 Heating device
Infobox
Patent Number
0717322000
Patent Number
717322000
Edits on 28 Apr, 2023
Golden AI
Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
071732200
Date of Patent
February 6, 2007
0Patent Application Number
110867710
Date Filed
March 22, 2005
0Official Website
Patent Primary Examiner
Edits on 22 Sep, 2022
Golden AI
Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
071732200
Date of Patent
February 6, 2007
0Patent Application Number
110867710
Date Filed
March 22, 2005
0Official Website
Patent Primary Examiner
Edits on 8 Jun, 2022
Golden AI
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US Patent 07173220 Heating device
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07173220
Date of patent
February 6, 2007
Patent application number
11086771
Date Filed
March 22, 2005
Patent primary examiner
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