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. 26, 2019
Filed:
Aug. 10, 2017
Ngk Insulators, Ltd., Nagoya-shi, Aichi, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
A apparatusfor measuring ammonia concentration includes an electromotive force acquisition sectionconfigured to acquire information about an electromotive force EMF of a mixed potential cellwhile a detection electrodeis exposed to a target gas, an oxygen concentration acquisition sectionconfigured to acquire information about oxygen concentration pin the target gas, and a control section. The control sectionderives ammonia concentration pin the target gas from the acquired information about the electromotive force EMF, the acquired information about the oxygen concentration p, and the relationship represented by formula (1):EMF=α log()−β log()+  (1)where α, β, and B each represent a constant, and a and b each represent any base (provided that a≠1, a>0, b≠1, and b>0).