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. 26, 2010
Filed:
Oct. 15, 2003
Hideko Kosaka, Kyoto, JP;
Hideko Kosaka, Kyoto, JP;
ARKRAY, Inc., Kyoto, JP;
Abstract
The present invention provides a novel test piece for creatinine measurement. The test piece includes a compound expressed by the following formula (1), a metal that forms a colored complex with the compound, and a buffer agent in a porous material. The amount of creatinine is determined by optically measuring a colored complex of the compound and the metal and evaluating the degree of inhibition of the colored complex formation by creatinine. In the formula (1), Rrepresents H, SOX, or COOX. Rand Rrepresent OH, SOX, or COOX and may be either the same or different. R, R, R, and Rrepresent H, OH, Cl, Br, I, NO, NO, or CHand may be either the same or different. Xs in the R, R, and Rrepresent H, Na, K, or NHand may be either the same or different.