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. 17, 2003
Filed:
Dec. 05, 2001
Denso Corporation, Kariya, JP;
Abstract
An exhaust gas side electrode is provided on one surface of a solid electrolytic substrate. A reference gas side electrode is provided on an opposite surface of the solid electrolytic substrate so as to be exposed to a reference gas stored in a reference gas chamber. Each lead of the electrode is connected to a signal output terminal. This sensor satisfies a relationship B/A<0.5, wherein 'A' represents an overall resistance value of an electric path including the solid electrolytic substrate, the electrodes, and their leads in a sensor activated condition, while 'B' represents a resistance value of the leads at a room temperature. Some embodiments may be arranged such that at least one of the leads has a low resistance portion located in the vicinity of the electrodes and a high resistance portion located in the vicinity of signal output terminals. For example, at least one lead may have a smaller resistance per unit length near the electrodes as compared to the resistance per unit length at a location far from the electrodes.