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:
Nov. 18, 2025
Filed:
Aug. 30, 2022
Ngk Spark Plug Co., Ltd., Nagoya, JP;
Hitoshi Furuta, Nagoya, JP;
Akinori Kojima, Nagoya, JP;
Kentaro Kamada, Nagoya, JP;
Yosuke Suzuki, Nagoya, JP;
Niterra Co., Ltd., Nagoya, JP;
Abstract
A gas sensor element includes: a first ceramic structure (A) having a detection cell (); a second ceramic structure (B) having a pump cell () disposed apart from the first ceramic structure in a lamination direction; and a third ceramic structure (C) having a frame-shaped body () surrounding a space () formed between the first and second ceramic structures, the frame-shaped body including a gas introduction portion () and a peripheral wall portion (). A gap () connected to the space () is formed between an opposed surface () and the second ceramic structure. A ceramic buffer layer () having a lower shrinkage start temperature than a material for forming the gas introduction portion is formed on the opposed surface so as to overlap a boundary portion X between an edge () on the external side of the gap and the second ceramic structure when viewed in the lamination direction.