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:
Oct. 11, 2022
Filed:
Nov. 26, 2019
Ngk Insulators, Ltd., Aichi, JP;
Yuichiro Kondo, Obu, JP;
Nobuhiko Mori, Nagoya, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
In a gas sensor, which measures a measurement pump current Ipof a measurement chamber, while switching a preliminary pump cell of a preliminary chamber ON or OFF at a constant period, there are formed in communication with each other sequentially from a gas introduction port in the interior of a structural body made from a solid electrolyte, a preliminary chamber, an oxygen concentration adjustment chamber, and a measurement chamber. The gas sensor rapidly determines a steady-state value of a measurement pump current Ip, based on a peak value of a rate of change over time dIp/dt of the measurement pump current Ip, thereby hastening an ON/OFF switching period of the preliminary pump cell.