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:
Sep. 19, 2023
Filed:
Sep. 16, 2020
Ngk Spark Plug Co., Ltd., Nagoya, JP;
Yosuke Suzuki, Nagoya, JP;
Takumi Yamada, Nagoya, JP;
Hitoshi Furuta, Nagoya, JP;
Kentaro Kamada, Nagoya, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A sensor element () including a measurement chamber (); a pump cell () including a solid electrolyte body (), an inner electrode (), and an outer electrode (); and a reference cell (). At least one electrode contains a noble metal and a component of the solid electrolyte body. In a cross section, the at least one electrode has a noble metal region (), a solid electrolyte body region (), and a coexistence region () in which the noble metal and the component of the solid electrolyte body coexist. Further, in the cross section, an area ratio SR of the coexistence region is not less than 15.5% and is less than 30%.