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:
Feb. 02, 1982
Filed:
Feb. 25, 1980
Hans-Joachim Habich, Hildrizhausen, DE;
C. A. Greiner & Sohne GmbH, Nurtingen, DE;
Abstract
A test tube for the examination of samples, especially of urine samples, in clinical environment for the amount of a given ingredient in the sample, by contacting the sample with a first reagent that reacts with the ingredient in a reaction in which hydrogen peroxide is formed, and with a second reagent which, in cooperation with the so formed hydrogen peroxide, causes an indicator dye to change its color for indicating the amount of the ingredient in the sample, comprises catalase and oxidase contained in at least one layer on at least a part of the inner surface of the test tube, and a solid substance that releases oxygen under the influence of the catalase in the interior of the test tube, the oxidase acting to cause oxidation by the released oxygen of any other ingredient (such as ascorbic acid) of the sample (such as urine sample) which would otherwise react with the formed hydrogen peroxide and thus deleteriously influence the indicator dye color change.