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:
Oct. 16, 1990
Filed:
Jan. 03, 1989
Richard C Yen, Los Angeles, CA (US);
Other;
Abstract
An apparatus and method for filtering and dialyzing a suspension including particulates and increasing the concentration of retainable matter wherein the suspension is drawn through the filter in a manner such that a negative pressure gradient is exerted on the suspension to cause the particulates to be drawn away from the filter membrane and avoid clogging the filter membrane. The apparatus comprises a multiplicity of pumps which are located downstream from the filter to thereby suck the suspension out of the filter and away from the filter membrane. The apparatus also comprises a multiplicity of different valve arrangements which permit filtering and dialysis to be performed independently of each other or simultaneously. A multiplicity of different filters, including stacked circular and rectangular filters are utilized such that locations within the system with the greatest clogging potential will be compensated and overcome by a corresponding more negative pressure to decrease the potential of clogging.