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:
Jan. 16, 2024
Filed:
Feb. 12, 2020
Koa Corporation, Nagano, JP;
Taro Kimura, Nagano, JP;
KOA CORPORATION, Nagano, JP;
Abstract
After a sulfidation detection conductor () is formed on a front surface of a large-sized substrate (A), a pair of first protective films () made of an insoluble material is formed, respectively, on predetermined positions of the sulfidation detection conductor (), and a second protective film () made of a soluble material is formed so as to cover the sulfidation detection conductor () positioned between the pair of first protective films (), and thereafter, end face electrodes () are formed, respectively, on divided faces of each strip-shaped substrate (B) obtained by primarily dividing the large-sized substrate (A). Then, after external electrodes () are formed by performing electrolytic plating with respect to each chip substrate (C) obtained by secondarily dividing each strip-shaped substrate (B), a sulfidation detection portion () is exposed to the outside by removing the second protective film (), whereby a sulfidation detection sensor () can be obtained.