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. 17, 1993
Filed:
May. 29, 1991
Applicant:
Inventor:
William R Fiehler, St. Louis, MO (US);
Assignee:
Sherwood Medical Company, St. Louis, MO (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210782 ; 210515 ; 210516 ; 210787 ; 210789 ; 422101 ; 422102 ; 436177 ;
Abstract
A serum or plasma collection device including a gel material for partitioning and separating heavier and lighter phases of a fluid sample such as a blood sample. The device preferably includes an affinity member such as a disc-shaped or ring-shaped member or a coating on the collection tube which has an affinity for the separated oil or degradation material from the gel material to prevent the separated material from interfering with the sampling of the separated fluid sample. The affinity member is preferably formed of hydrophobic and/or non-wetted material and has a specific gravity different than the specific gravity of the lighter phase.