Filter materials for adsorbing hydrocarbons
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United States of America Patent
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Oct 6, 2009
Grant Date -
Sep 14, 2006
app pub date -
Apr 3, 2006
filing date -
Apr 28, 2004
priority date (Note) -
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Abstract
A porous filter medium forms a filter or liner for extracting hydrocarbons from vapors emitted from a motorized vehicle, device or appliance fuel tank. The filter medium is a polymer network of a foam, nonwoven or collection of particles and has fine pore size and a butane working capacity (W/W %) of 4.0 percent or higher.
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