Patent ID: 8936160
Filing Date: 2015-01-20
Classification: A01J,A23C,A61M,B01D,B01F,B01L,B05B,C12H

Abstract:
1. A fluid filtration device, comprising: a support body having a first main surface side and having a functional plate at said first main surface side, the functional plate having a thickness of less than 2 microns and comprising a plurality of orifices penetrating through said thickness of said functional plate, wherein the support body forms a cavity underneath said functional plate and said plurality of orifices, wherein an orifice within said plurality of orifices has a length less than six times a diameter of said orifice, wherein said plurality of orifices are arranged closely together in a group of orifices in a first zone of said functional plate, wherein said functional plate comprises a second zone along a boundary of the cavity, said second zone surrounding said first zone and said second zone being substantially free of any orifice, wherein said second zone extends over a width between said boundary and across from said first zone which is at least a plurality of times as large as said thickness of said functional plate, and wherein, at said main surface, said cavity has a cross-section with a width of less than 250 microns.