Patent ID: 7993520

Claim:
An application specific matched filter media for filtering fluids with unequal distributions of known particle types having known particle size ranges and known relative particle type concentrations, comprising: a first surface filtration medium configured to capture a first size range of particles includes a first number of discrete layers of a first mesh material arranged in a first stack, said first mesh material exclusively configured to capture particles on its surface, said first surface filtration medium having a first predetermined absolute micron filter rating determined in combination by a pore size of said first mesh material and said first number of layers; a second surface filtration medium configured to capture a second size range of particles downstream of said first filtration medium that includes a second number of discrete layers of a second mesh material arranged in a second stack immediately adjacent to said first stack, said second mesh material exclusively configured to capture particles on its surface, said second surface filtration medium having a second predetermined absolute micron filter rating determined in combination by a pore size of said second mesh material and said second number of layers; wherein a ratio of said first number of layers and said second number of layers is approximately equal to a ratio of a relative concentration of a first type of particle in said first size range to be filtered by said first surface filtration medium, and a second type of particle in said second size range to be filtered by said second surface filtration medium; and wherein said first mesh material has a pore size that is larger than said first size range, and said second mesh material has a pore size that is larger than said second size range.