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:
Aug. 25, 2026
Filed:
Aug. 05, 2024
Ngk Insulators, Ltd., Nagoya, JP;
Akifumi Morishita, Komaki, JP;
Takao Ohnishi, Fuso-cho, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
A conductivity measurement method includes: a) measuring a first complex impedance between a first detection electrode and a second detection electrode at a first frequency with a liquid being in contact with a protective layer to face each of the first and second detection electrodes through the protective layer; b) extracting a first extraction value from the first complex impedance according to an extraction rule; c) determining whether the first extraction value is within a tolerance; d) deciding a conductivity of the liquid based on the first extraction value when it is determined that the first extraction value is within the tolerance in c); and e) deciding the conductivity of the liquid based on a second extraction value extracted according to the extraction rule from a second complex impedance at a second frequency when it is determined that the first extraction value is outside the tolerance in c).