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:
Jul. 14, 2026
Filed:
Apr. 12, 2023
Niterra Co., Ltd., Nagoya, JP;
Toshimasa Sakakibara, Nagoya, JP;
Tatsuhiko Muraoka, Nagoya, JP;
Niterra Co., Ltd., Nagoya, JP;
Abstract
A sensor element () including: a detection element portion () provided with at least one cell () having a solid electrolyte () and a pair of electrodes () disposed on the solid electrolyte; a measurement chamber () faced by one of the electrodes; and a diffusion resistance portion () through which a gas to be measured is introduced from outside into the measurement chamber. A porous protection layer () is in direct contact with the diffusion resistance portion and covers the diffusion resistance portion. The porous protection layer contains ceramic particles which serve as a backbone, and has pores formed in gaps between the ceramic particles. A diameter ratio R represented by (an average diameter D1 (nm) of the pores/a particle diameter D2 (nm) at which an accumulated number of the ceramic particles accounts for 50%) is not greater than 100.