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:
May. 07, 1991
Filed:
Aug. 19, 1988
Fuminori Arai, Saitama, JP;
Takeshi Takayama, Saitama, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
In an integral multilayer analytical element for the analysis of albumin where at least one hydrophilic polymer binder layer and a porous spreading layer containing an indicator capable of binding to albumin to produce a color change are integrally superposed on a light-transmissive water-impermeable support in this order, the improvement comprising said indicator being dispersed in a hydrophilic polymer or a mixture of a hydrophilic polymer and a hydrophobic polymer and a pH buffer being incorporated into the spreading layer. In the analytical element of the invention, the error caused by the competitive inhibition by globulin can be removed by making to produce the color due to the bonding between albumin and indicator relatively much in the support side (lower side) portion of the porous spreading layer and by making to produce the color due to the bonding between globulin or other proteins and indicator relatively much in the outer surface side (opposite side to the support, upper side) portion of the porous spreading layer.