A method and device for separating particles from a liquid having particles therein, using a filter sized to permit the liquid to flow through pores, while retaining a substantial portion of the particles on the filter, with an absorbent layer contacting the back of the filter to facilitate liquid movement...http://www.google.es/patents/US8092691?utm_source=gb-gplus-sharePatente US8092691 - Method and apparatus for separating particles from a liquid
Method and apparatus for separating particles from a liquid