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:
Feb. 05, 2019
Filed:
Oct. 26, 2015
Sakura Color Products Corporation, Osaka-shi, Osaka, JP;
Norihiro Yamaguchi, Sakai, JP;
Kyoko Ohwaki, Nara, JP;
SAKURA COLOR PRODUCTS CORPORATION, Osaka-shi, JP;
Abstract
A primary object of the present invention is to provide a hydrogen peroxide gas detection indicator which allows more certain visual recognition of color changing according to the concentration of hydrogen peroxide gas. The structure of this invention relates to an ink composition for detecting hydrogen peroxide gas containing (1) at least one of styrene acrylic resins and styrene-maleic acid resins and (2) a methine dye. According to this invention, a color-changing layer is formed using the ink composition for detecting hydrogen peroxide gas, allowing color changing according to the concentration of hydrogen peroxide gas to be visually recognized.