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:
May. 02, 1978
Filed:
Mar. 22, 1976
Friedrich Rosemeyer, Urberach, DT;
Wolfram Hubert Walker, Oberroden, DT;
Karl-Heinz Ganshirt, Sprendlingen und, DT;
Heinz Wendt, Senden, DT;
Biotest-Serum-Institut GmbH, Frankfurt, M.-Niederrad, DT;
Abstract
A filter for blood comprising a pair of members together forming a housing with an inlet and an outlet, an aperture diaphragm between said members across the interior of said housing and dividing said housing into a filter chamber and a drip chamber respectively communicating with said inlet and outlet, means forming a hermetic and sterile seal between said members, and a plurality of filter elements serially disposed within said housing so that blood being filtered therethrough must pass in sequence through said inlet, through all of said filter elements, through the aperture of said diaphragm and then through said outlet. Preferably at least four woven nylon screens are employed as the filter elements in a nylon housing, the filter elements in the direction of flow successively having screen sizes of about 200 .mu., 50 .mu., 20 .mu. and 10 .mu..