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:
Jan. 12, 1993
Filed:
Aug. 15, 1991
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
422 56 ; 422 57 ; 422 58 ; 435805 ; 435970 ; 436164 ; 436169 ;
Abstract
A device for testing body fluids includes (a) a test reagent layer (1) formed on a substrate (5) and containing a test reagent, the tone of which changes according to the content of a test-objective material in a solution to be tested, and (b) a tone layer for criterion (3) formed on the substrate (5) and having a color formed by a dye or the like. The tone layer is used in order to judge the hue of the resulting color of the test reagent layer, wherein both the test layer (1) and the tone layer (3) have the property of absorbing the solution to be tested, and the hue of the resulting color of the test reagent layer and the hue of the tone layer can be compared by their wet colors, thereby affording a highly precise body fluid test.