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:
Mar. 10, 2026
Filed:
Jun. 09, 2022
Nagaoka University of Technology, Nagaoka, JP;
Koa Corporation, Ina, JP;
Tomoichiro Okamoto, Nagaoka, JP;
Kenichi Iguchi, Ina, JP;
Yukiko Ota, Ina, JP;
Ryosuke Komatsu, Ina, JP;
Tetsuro Tanaka, Ina, JP;
Katsuhide Nishizawa, Ina, JP;
NAGAOKA UNIVERSITY OF TECHNOLOGY, Nagaoka, JP;
KOA CORPORATION, Ina, JP;
Abstract
An oxygen sensor element that can achieve electric power saving without losing sensor characteristics has a structure in which an outer surface of a ceramic sintered body as a sensing layer made of a composition LnBaCuO(Ln denotes rare earth element) is covered with heat insulating layers. A heat insulating material having a composition LnBaCuOis used for the heat insulating layers, and that composition LnBaCuOis added with 20 mol % of LnBaCuO. This allows a sintering behavior of the heat insulating layers to come close to a sintering behavior of the sensing layer, and can thus prevent the occurrence of separation of the layers and cracks. The oxygen sensor element has a sandwich structure where the sensing layer is sandwiched between the heat insulating layers, thereby reducing the amount of heat dissipated from the sensing layer, and making it possible to achieve electric power saving.