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:
Aug. 22, 2000
Filed:
Apr. 16, 1998
James Bennett Johnston, Ambler, PA (US);
Kenneth Grady, Phoenixville, PA (US);
Binax Services, Inc., Portland, ME (US);
Abstract
A process for separating plasma or serum from mammalian whole blood includes the steps of applying a sample of blood through a hydrophobically faced sample receiving hole positioned in a first upper layer of hydrophobic material to a first layer of fibrous hydrophilic material which has been impregnated with a blood agglutinating agent so that it acts to retain red blood cells but not plasma or serum and layer is sealed at its upper edges to the first layer of hydrophobic material and allowing the liquid portion of the sample to flow downwardly through the first layer of fibrous hydrophilic material into a second layer comprised of a different fibrous hydrophilic material which second layer is sealed at its lower edges to a second layer of hydrophobic material whereby it acts to retain the plasma or serum.