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. 24, 1989
Filed:
Jul. 02, 1987
Applicant:
Inventors:
Johannes Heckmann, Luebeck, DE;
Wolfgang May, Reinfeld, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
422 86 ; 422103 ; 422 85 ;
Abstract
A test tube with several reagent layers affecting the detection reaction, which are separated from one another by means of a permeable interlayer, is improved so that an undesired exchange of reaction products or reagents between the layers is prevented during the measurement process and also during the dwell time, i.e. before and after the measurement. To this end, the interlayer is provided with a valve unit that opens only during the flow.