Patent ID: 9446337
Filing Date: 2016-09-20
CPC Classification: B01D

Claim Text:
1. A filter media configured for long term high temperature applications, comprising: an upstream layer comprised of nonwoven fiber having a denier between about 5.0 and 7.0, and a weight of between about 3 and 5 opsy; and a cap layer comprising a first fiber having a denier between about 1.0 and 2.0 and a second fiber having a denier between about 1.75 and 2.75, wherein the cap layer has a weight between about 2.0 and 4.0 opsy, carried by said upstream layer and disposed downstream from said upstream layer, wherein the filter media exhibits a substantially stable tensile strength at a temperature of at least about 300° F. for at least about 24 hours, and wherein pressure drop across the filter media is less than about 10.4 inches Hg for a flow rate of oil or transmission fluid up to about 40.7 lpm at a temperature of about 24° C.