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:
Aug. 17, 2021
Filed:
Oct. 29, 2015
Applicant:
Ngk Spark Plug Co., Ltd., Nagoya, JP;
Inventors:
Assignee:
NGK SPARK PLUG CO., LTD., Nagoya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 3/18 (2006.01); H05B 3/78 (2006.01); H05B 3/06 (2006.01); H05B 3/46 (2006.01); H05B 3/52 (2006.01); H05B 3/34 (2006.01); H05B 3/12 (2006.01); H05B 1/02 (2006.01); H05B 3/14 (2006.01);
U.S. Cl.
CPC ...
H05B 3/18 (2013.01); H05B 1/0297 (2013.01); H05B 3/06 (2013.01); H05B 3/12 (2013.01); H05B 3/141 (2013.01); H05B 3/34 (2013.01); H05B 3/46 (2013.01); H05B 3/52 (2013.01); H05B 3/78 (2013.01); H05B 2203/003 (2013.01); H05B 2203/013 (2013.01); H05B 2203/016 (2013.01); H05B 2203/021 (2013.01);
Abstract
A ceramic heater according to one aspect of the present invention has a cylindrical ceramic heater and an annular metal flange fitted around the ceramic heater. In the ceramic heater, one side of the flange with respect to an axial direction of the heater body is concave in the axial direction to define a concave part. The concave part includes a glass accumulation region filled with a glass material. The glass material in the glass accumulation is fused to the flange and to the heater body.