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. 18, 1992
Filed:
Mar. 26, 1991
Applicant:
Inventors:
Aurora F de Castro, Union, MI (US);
Joseph W Fraser, Jr, Granger, IN (US);
Janice L Shultz, Elkhart, IN (US);
Surendra K Gupta, Elkhart, IN (US);
Assignee:
GDS Technology, Inc., Elkhart, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210767 ; 210 85 ; 210435 ; 210445 ; 210446 ; 210496 ; 210505 ; 210506 ; 210509 ; 422 56 ; 422 57 ; 422101 ; 436169 ; 436170 ; 436177 ; 604406 ;
Abstract
Blood separation filter assemblies and methods are provided to quickly and completely separate plasma or serum from whole blood without the need of centrifugation. The filter assemblies and methods have filter materials of a predetermined thickness which are maintained under positive pressure during use. The filter materials have at least one layer of glass fibers having an average fiber diameter ranging from 0.2 .mu.m to 7.0 .mu.m and which are compressed at least 25% in thickness.