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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 7288194 |
Underdrain system |
Oct. 30, 2007 |
| 7288193 |
Apparatus for directing fluids through a filter 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 |
| 7160444 |
System for removing contaminants from storm water |
Jan. 9, 2007 |
| 7156982 |
Apparatus for determining weight and biomass composition of a trickling filter |
Jan. 2, 2007 |
| 7105084 |
Hybrid flow pond |
Sep. 12, 2006 |
| 7094342 |
Water activation device |
Aug. 22, 2006 |
| 7067055 |
Trickling alter tank with top side load cell assembly |
Jun. 27, 2006 |
| 7022230 |
Filtration device |
Apr. 4, 2006 |
| 7014762 |
High capacity portable exchange single bed deionizer |
Mar. 21, 2006 |
| 7001521 |
Distributing or collecting device |
Feb. 21, 2006 |
| 6998038 |
Stormwater treatment system |
Feb. 14, 2006 |
| 6991723 |
Underdrain system |
Jan. 31, 2006 |
| 6974536 |
Wastewater treatment apparatus including dosing and recirculation chambers within a single tank |
Dec. 13, 2005 |
| 6972091 |
Ion exchange resin plant |
Dec. 6, 2005 |
| 6919020 |
Distributor/collector system |
Jul. 19, 2005 |
| 6858139 |
Methods and devices for preparing hemodialysis solutions |
Feb. 22, 2005 |
| 6841067 |
Filtration device for liquids |
Jan. 11, 2005 |
| 6841069 |
High rate filter and high rate filtration method using the filter |
Jan. 11, 2005 |
| 6830684 |
Integrated liquid and gas distribution device for underdrain block laterals |
Dec. 14, 2004 |
| 6797166 |
Underdrain apparatus |
Sep. 28, 2004 |
| 6641738 |
Water/oil separator and use thereof |
Nov. 4, 2003 |
| 6616832 |
Multi-layer recirculating filter wastewater treatment apparatus |
Sep. 9, 2003 |
| 6605214 |
Devices for preparing hemodialysis solutions |
Aug. 12, 2003 |
| 6521125 |
Oil/hydrocarbon removal system |
Feb. 18, 2003 |
| 6488842 |
Filtering device |
Dec. 3, 2002 |
| 6475385 |
Resin trap device for use in ultrapure water systems and method of purifying water using same |
Nov. 5, 2002 |
| 6461501 |
Ornamental pond skimmer and filter apparatus |
Oct. 8, 2002 |
| 6398951 |
Method and apparatus for removing oil from water including monitoring of adsorbent saturation |
Jun. 4, 2002 |
| 6383373 |
Biological filtration apparatus |
May. 7, 2002 |
| 6375723 |
Apparatus for improving gas distribution in a prepurifier |
Apr. 23, 2002 |
| 6187194 |
Packaged aeration and filtration system |
Feb. 13, 2001 |
| 6183637 |
Resin trap device for use in ultrapure water systems and method of purifying water using same |
Feb. 6, 2001 |
| 6132599 |
Multi-layer recirculating filter wastewater treatment apparatus |
Oct. 17, 2000 |
| 6110366 |
Anchor for an underdrain block |
Aug. 29, 2000 |
| 6099728 |
Filter cartridge with a sieve in an outlet aperture |
Aug. 8, 2000 |
| 6096806 |
Storage stable autodepositable dispersions of epoxy resins and processes therefor and therewith |
Aug. 1, 2000 |
| 6059967 |
Distributor device for water conditioner backflush apparatus |
May. 9, 2000 |
| 6048132 |
Filter underdrain with prefabricated cells |
Apr. 11, 2000 |
| 6024870 |
Sewage filtration system |
Feb. 15, 2000 |
| 5980743 |
Filter means with fabric insert |
Nov. 9, 1999 |
| 5976370 |
Underdrain structure for media filters |
Nov. 2, 1999 |
| 5948252 |
Filtering device |
Sep. 7, 1999 |
| 5916104 |
Box, an insulating system, and a ground drainage system |
Jun. 29, 1999 |
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