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. 21, 2012
Filed:
Apr. 02, 2009
Seiji Ohya, Aichi, JP;
Tomohiro Wakazono, Konan, JP;
Takashi Nakao, Kasugai, JP;
Hisashi Sasaki, Konan, JP;
Koji Shiotani, Kasugai, JP;
Seiji Ohya, Aichi, JP;
Tomohiro Wakazono, Konan, JP;
Takashi Nakao, Kasugai, JP;
Hisashi Sasaki, Konan, JP;
Koji Shiotani, Kasugai, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A gas sensor () has a gas sensor element () including a first measurement chamber (); a first pumping cell () having a first interior pump electrode () and its counterpart electrode (); a second measurement chamber (); a second pumping cell () that has a second interior pump electrode (); and a beater (). The heater () has a lead section (); a first resistance portion () having a higher resistance than the lead portion (); and a main heating portion () having a second resistance portion () having a higher resistance than the first resistance portion () disposed at a leading end side in a longitudinal direction relative to a leading end of the first resistance portion (). The second interior pump electrode () is located within the first resistance portion () in the longitudinal direction.