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:
Jun. 22, 2021
Filed:
Jul. 12, 2019
Applicant:
Biomerieux, Marcy l'Etoile, FR;
Inventor:
Frederic Foucault, Marcy l'Etoile, FR;
Assignee:
BIOMERIEUX, Marcy l'Etoile, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M 1/34 (2006.01); A61J 1/20 (2006.01); B01D 39/20 (2006.01); B01L 3/00 (2006.01); G01N 1/34 (2006.01); G01N 33/49 (2006.01); A61M 1/00 (2006.01); A61M 5/178 (2006.01);
U.S. Cl.
CPC ...
A61M 1/3496 (2013.01); A61J 1/2013 (2015.05); A61J 1/2051 (2015.05); A61J 1/2055 (2015.05); A61J 1/2065 (2015.05); A61J 1/2089 (2013.01); A61M 1/0068 (2014.02); A61M 1/34 (2013.01); A61M 5/178 (2013.01); B01D 39/2017 (2013.01); B01L 3/502 (2013.01); B01L 3/50825 (2013.01); G01N 1/34 (2013.01); G01N 33/491 (2013.01); B01D 2239/0407 (2013.01); B01D 2239/0414 (2013.01); B01D 2239/065 (2013.01); B01D 2239/1208 (2013.01); B01D 2239/1216 (2013.01); B01L 2200/0631 (2013.01); B01L 2300/042 (2013.01); B01L 2300/044 (2013.01); B01L 2300/0672 (2013.01); B01L 2300/0681 (2013.01); B01L 2300/0832 (2013.01); B01L 2300/0861 (2013.01); B01L 2400/0478 (2013.01); B01L 2400/0487 (2013.01); B01L 2400/0683 (2013.01);
Abstract
A filter medium includes two porous zones arranged in the form of a stack that include (i) a first porous zone, called 'prefiltration', treated with at least one reagent presenting affinity for red blood cells and leading to red blood cells being captured or agglutinated on the prefiltration zone; and (ii) a second porous zone, called 'asymmetric', presenting pore size that decreases transversely to its thickness, the portion of higher pore size being positioned towards the prefiltration zone.