Patent ID: 9630132
Date: 2017-04-25
CPC Classifications: B01D

Claim:
1. A filter, comprising: a plurality of layers of impermeable material; at least one first layer of corrugated filter media situated between a first pair of the layers of impermeable material, and at least partially defining a first plurality of flutes extending parallel to a first axis from a first side of the filter to a second side of the filter; and at least one second layer of corrugated filter media situated between a second pair of the layers of impermeable material, and at least partially defining a second plurality of flutes extending parallel to a second axis from a third side of the filter to a fourth side of the filter, wherein the at least one first layer and the at least one second layer of corrugated filter media are different types of filter media and each of the first plurality of flutes includes one open end and one sealed end along the direction the first plurality of flutes extend, and each pair of adjoining flutes of the first plurality of flutes includes one open end and one sealed end adjacent each other.