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. 02, 1989
Filed:
Jul. 08, 1986
Fuminori Arai, Saitama, JP;
Takeshi Igarashi, Saitama, JP;
Fuji Photo Film Co, Ltd., Kanagawa, JP;
Abstract
An integral multilayer analytical element for analysis of cholesterol which comprises a water-impermeable light-transmissive support, a hydrophilic layer and a spreading layer superposed in this order, and contains cholesterol esterase, cholesterol oxidase, peroxidase and a coloring reagent composition, which is characterized, in that the above coloring reagent composition is a combination of 4-aminoantipyrine or its derivative and 2-hydroxy-3,5-dichlorobenzene sulfonic acid, and in that pH of the layer where coloring reaction proceeds is kept in the range of 7.5 to 9. This analytical element is stable, and capable of preserving more than 8 months without fogging.