The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2008
Filed:
Mar. 22, 2007
Mitsuru Ohta, Inazawa, JP;
Masao Nishioka, Tokoname, JP;
Mitsuru Ohta, Inazawa, JP;
Masao Nishioka, Tokoname, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A heating device is provided, including an insulating ceramic base having a heating surface for heating an object. A high frequency electrode is embedded in the insulating ceramic base in the vicinity of the heating surface, and a heating body is embedded in the base in a location that is further from the heating surface than the location of the high frequency electrode. A low resistance ceramic member is provided so as to be exposed to a part of the heating surface of the insulating ceramic base and to be connected to a conductive member inside of the insulating ceramic base. A main component of the material of the low resistance ceramic member is common to that of the insulating ceramic base, and the respective thermal expansion coefficients are equivalent.