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:
Dec. 18, 2007
Filed:
Jul. 20, 2005
Applicants:
Kozo Takamura, Nagoya, JP;
Makoto Shirai, Hekinan, JP;
Kenji Fukaya, Chiryu, JP;
Inventors:
Assignee:
Denso Corporation, Kariya, Aichi-Pref., JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
A ceramic heater is provided which may be built in a gas sensor to heat a sensor element up to a desired activation temperature. The ceramic heater includes a pair of electrical conductors formed on a ceramic body. Each of the conductors is equipped with a terminal. Leads are joined to the terminals for supplying electrical power to the conductors. Joints between the leads and the terminals are covered hermetically by a seal, thereby minimizing corrosion thereof to avoid disconnections of the terminals from the leads. This improves the durability of the ceramic heater.