Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Guanghui Chen0
Henricus Jacobus Cornelis Gommeren0
Lawrence Mark Knorr0
Date of Patent
August 9, 2011
Patent Application Number
12284027
Date Filed
September 18, 2008
Patent Citations Received
Patent Primary Examiner
Patent abstract
A liquid filter with a composite medium that has a nanoweb adjacent to and optionally bonded to a microporous membrane. The membrane is characterized by an LRV value of 3.7 at a rated particle size, and the nanoweb has a fractional filtration efficiency of greater than 0.1 at the rated particle size of the membrane. The nanoweb also has a thickness efficiency ratio of greater than 0.0002 at that efficiency. The nanoweb acts to provide depth filtration to the membrane, prefilters particles and extends the lifetime of the membrane.
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