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:
Jun. 23, 2020
Filed:
Nov. 28, 2017
Honda Motor Co., Ltd., Minato-ku, Tokyo, JP;
Shinya Kojima, Wako, JP;
Hiroaki Kawanishi, Wako, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
A membrane thickness evaluation apparatus includes a first voltage application electrode and a second voltage application electrode. A membrane electrode assembly is interposed between the first voltage application electrode and a second voltage application electrode. Alternating current voltage is applied to the membrane electrode assembly to measure the impedance of an electrolyte membrane, and electrostatic capacitance is calculated from the impedance. The electrostatic capacitance is compared with the correlation with the membrane thickness to determine the membrane thickness of the electrolyte membrane.
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