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:
Apr. 13, 1993
Filed:
Dec. 30, 1988
Applicant:
Inventors:
Raymond Kuhn, Clemmons, NC (US);
Gene H MacDonald, Greensboro, NC (US);
Assignee:
Environmental Diagnostics, Inc., Burlington, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436525 ; 436518 ; 436810 ; 436531 ; 435174 ; 435970 ; 422100 ; 422 56 ; 422 58 ;
Abstract
A composite device for detecting or determining the presence of components in liquids is described. The device has, in combination at least a first and a second layer of porous material in contact with each other, at least one sample receiving site in said device and at least one reaction site connected to the sample receiving site via the second layer. A pre-determined liquid flow path in and through said layer is defined by liquid barrier means located in said layers whereby liquid deposited at the sample site is transferred to the reaction site along a path from one member to the other.