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:
Sep. 20, 2016
Filed:
Oct. 15, 2013
Wako Pure Chemical Industries, Ltd., Osaka-shi, Osaka, JP;
Yoshikazu Fujita, Takatsuki, JP;
Toshinari Ohashi, Amagasaki, JP;
Naoyuki Yamamoto, Amagasaki, JP;
Takashi Takagaki, Amagasaki, JP;
Satoshi Hasaba, Amagasaki, JP;
Wako Pure Chemical Industries, Ltd., Osaka, JP;
Abstract
The present invention addresses the problem of providing a chelate color former which can measure the concentration of iron with high sensitivity and with low blank values when measuring the concentration of iron, and an iron concentration measurement method and kit that use this chelate color former. The present invention relates to: a compound represented by following formula [1] or a salt thereof wherein, Rand Reach independently represent —SOH or —COH; an iron concentration measurement method in which the compound is used as a chelate color former, the compound is brought into contact with iron in a sample, and the concentration of iron in the sample is measured on the basis of the degree of resulting color development; and a kit to be used therein.