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Class Information
Number: 210/291
Name: Liquid purification or separation > Particulate material type separator, e.g., ion exchange or sand bed > Particular liquid receiving means or foraminous bed retainer
Description: Apparatus comprising particular means for introducing liquid into a bed of separating material, particular means for removing liquid from a bed of separating material, or particular strainer means within the casing.










Sub-classes under this class:

Class Number Class Name Patents
210/293 Floor type, e.g., false bottom 161
210/292 Hood or top protector type 21


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8658279 Porous, free-flowing hydrophobic particles loaded with aqueous fluid with compatibilizer additive Feb. 25, 2014
8623206 Gravitational filter and liquid purification device Jan. 7, 2014
8616396 Water treatment pressure vessel having internal conical distributor plates Dec. 31, 2013
8518254 Coolant demineralizer for a fuel cell vehicle Aug. 27, 2013
8491787 Leveling hold-down mechanism for lateral screens Jul. 23, 2013
8480896 Scavenging filter Jul. 9, 2013
8354021 System of water collecting, cleaning, and storing Jan. 15, 2013
8349183 Water conditioner assembly Jan. 8, 2013
8323514 Method and system for cleaning filter media support structures Dec. 4, 2012
8197687 Contaminant adsorbent fluted filter element Jun. 12, 2012
8142654 Water bottle with filter Mar. 27, 2012
8142655 Filtration unit Mar. 27, 2012
8123941 Sand filter and method of constructing same Feb. 28, 2012
8110103 Flow-control supports for distributor plates in composite pressure vessel assemblies Feb. 7, 2012
8080162 Method for separating fission product, and apparatus used therefor Dec. 20, 2011
8052870 Underdrain system Nov. 8, 2011
8012349 Small volume unitary molded filters and supports for adsorbent beds Sep. 6, 2011
8002974 Passive stormwater management system Aug. 23, 2011
7943051 Portable settling and dewatering tank May. 17, 2011
7922903 System and method for uniformly distributing a fluid through a filter bed in a filter Apr. 12, 2011
7871528 Water filter Jan. 18, 2011
7862713 Reservoir water filtration system Jan. 4, 2011
7833412 Stormwater treatment system with flow distribution overflow/bypass tray Nov. 16, 2010
7820043 Underdrain system Oct. 26, 2010
7799235 Fluid filter system and related method Sep. 21, 2010
7771597 Filter system Aug. 10, 2010
7758750 Flume for a filter system including at least one filter having a filter bed that is periodically washed with liquid, gas or a combination thereof Jul. 20, 2010
7736506 System and method for uniformly distributing a fluid through a filter bed in a filter Jun. 15, 2010
7722766 Filter cartridge including a snap-on rim connector May. 25, 2010
7718061 Apparatus for inhibiting fines carryover May. 18, 2010
7708883 Box filter structure May. 4, 2010
7699977 Assembling unit for filtration and adsorption of waste and sewage water Apr. 20, 2010
7695615 Filtering device Apr. 13, 2010
7691261 Apparatus for combining solids thickening and dewatering in one vessel Apr. 6, 2010
7658841 Oil-water separator Feb. 9, 2010
7588686 Dual porosity filter Sep. 15, 2009
7578398 Bacteria growth device, assembly including the same and method associated thereto Aug. 25, 2009
7520987 System and apparatus for purging absorptive materials used in the removal of contaminates from an aqueous medium Apr. 21, 2009
7513993 Filter devices including a porous body Apr. 7, 2009
7470372 Fluid treatment device Dec. 30, 2008
7468129 Oil-water separator Dec. 23, 2008
7390408 Shallow bed fluid treatment apparatus Jun. 24, 2008
7374676 High rate filtration system May. 20, 2008
7344644 Method and system for purifying water Mar. 18, 2008
7335299 Dual filter Feb. 26, 2008
7303682 Distributing or collecting device Dec. 4, 2007
7288193 Apparatus for directing fluids through a filter system Oct. 30, 2007
7288194 Underdrain system Oct. 30, 2007
7198941 Porous vessel bioreactor Apr. 3, 2007
7195707 Apparatus for determining weight and biomass composition of a trickling filter Mar. 27, 2007

1 2 3 4










 
 
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