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:
Jul. 24, 2012
Filed:
Jan. 19, 2000
Applicants:
Anne Gillian Welch, Fife, GB;
Peter Reynolds Foster, Edinburgh, GB;
Inventors:
Anne Gillian Welch, Fife, GB;
Peter Reynolds Foster, Edinburgh, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 33/53 (2006.01); G01N 33/68 (2006.01);
U.S. Cl.
CPC ...
Abstract
Abnormal infective prion proteins are removed from liquids containing biologically active substances, particularly blood products, by filtration using a depth filter formed of a matrix comprising solid particles of porous material and having a pore size less than 6 microns. Preferably the filter is free of cationic or anionic charged material.