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:
Feb. 15, 2022
Filed:
Feb. 16, 2017
Applicant:
Ngk Spark Plug Co., Ltd, Nagoya, JP;
Inventors:
Assignee:
NGK SPARK PLUG CO., LTD., Nagoya, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/14 (2006.01); H05B 3/18 (2006.01); H05B 3/48 (2006.01); F24H 9/18 (2006.01); C04B 41/86 (2006.01); H05B 3/40 (2006.01);
U.S. Cl.
CPC ...
H05B 3/141 (2013.01); C04B 41/86 (2013.01); H05B 3/18 (2013.01); H05B 3/40 (2013.01); F24H 9/1818 (2013.01); F24H 2250/02 (2013.01); H05B 2203/013 (2013.01); H05B 2203/021 (2013.01);
Abstract
An object of the present invention is to suppress adhesion of scale to a surface of a ceramic heater that is used for fluid heating. The ceramic heater has a ceramic body and a coating layer. The ceramic body has a heat generation resistor. The coating layer contains glass as a main component and is formed so as to coat a surface of the ceramic body. The coating layer has a function of smoothing the surface of the ceramic body.