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. 04, 2022
Filed:
Jan. 29, 2019
Hitachi, Ltd., Tokyo, JP;
Rintarou Minamitani, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention provides a corrosive environment monitoring method capable of short-term to long-term identification of the type of corrosive gas, without requiring a power source such as a commercial power source or a storage battery, in a narrow place inside an equipment housing of an electric or electronic device to be evaluated. The corrosive environment monitoring method of the present invention involves using a corrosion sensor that has a passage structure in which one end is closed and the other end is an opening, wherein a part of the upper and lower surfaces or left and right surfaces with respect to the opening is formed by a transparent substrate, and a metal thin film is formed on the surface of the transparent substrate that is in contact with the corrosive gas flowing in from the opening, observing the degree of discoloration of the metal thin film through the transparent substrate, and identifying the type of the corrosive gas from the relationship between the degree of discoloration and the type of corrosive gas that has been observed in advance.