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Class Information
Number: 210/279
Name: Liquid purification or separation > Particulate material type separator, e.g., ion exchange or sand bed > With rehabilitation means > Backwash or blowback means > With embedded fluid distributor
Description: Apparatus having a stationary fluid distributor extending into the bed.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7364654 |
In-home water treatment system |
Apr. 29, 2008 |
| 7341662 |
Distribution and collection headers for a filter bed |
Mar. 11, 2008 |
| 7288193 |
Apparatus for directing fluids through a filter system |
Oct. 30, 2007 |
| 7217363 |
Filtration system |
May. 15, 2007 |
| 7192521 |
Filter having a media retaining plate |
Mar. 20, 2007 |
| 7105084 |
Hybrid flow pond |
Sep. 12, 2006 |
| 7090771 |
Filtration system underdrain |
Aug. 15, 2006 |
| 7063787 |
Filter media retaining cap and hold down grid |
Jun. 20, 2006 |
| 7045067 |
Method and apparatus for increasing filter contaminant loading capacity |
May. 16, 2006 |
| 6998046 |
Filter system and methods of operating the same |
Feb. 14, 2006 |
| 6991726 |
Filter having a media retaining plate |
Jan. 31, 2006 |
| 6972091 |
Ion exchange resin plant |
Dec. 6, 2005 |
| 6966987 |
Tangentially fed media filter method and apparatus |
Nov. 22, 2005 |
| 6921481 |
Automatic backwash filter system |
Jul. 26, 2005 |
| 6919020 |
Distributor/collector system |
Jul. 19, 2005 |
| 6863808 |
Modular water softener system |
Mar. 8, 2005 |
| 6841069 |
High rate filter and high rate filtration method using the filter |
Jan. 11, 2005 |
| 6773589 |
Method and apparatus for removing particulate contaminants from commercial laundry waste water |
Aug. 10, 2004 |
| 6709574 |
Fish pond filter system |
Mar. 23, 2004 |
| 6706195 |
High efficiency ion exchange system for removing arsenic from water |
Mar. 16, 2004 |
| 6685826 |
Fish pond filter system |
Feb. 3, 2004 |
| 6605211 |
One-piece underdrain for swimming pool filters |
Aug. 12, 2003 |
| 6517724 |
Air charged backwashing bioclarifier |
Feb. 11, 2003 |
| 6471857 |
Filter apparatus with sand filter bed |
Oct. 29, 2002 |
| 6447675 |
Fish pond filter system |
Sep. 10, 2002 |
| 6428690 |
Filter module with improved backwash capability |
Aug. 6, 2002 |
| 6383373 |
Biological filtration apparatus |
May. 7, 2002 |
| 6365044 |
Buoyant media filter with diffuser |
Apr. 2, 2002 |
| 6361701 |
Method and device for continuous filtration of liquids |
Mar. 26, 2002 |
| 6325931 |
Filtration system having a low profile extruded underdrain |
Dec. 4, 2001 |
| 6287462 |
Alternate sanitizer for sand filter |
Sep. 11, 2001 |
| 6143186 |
Device for continuous filtration of liquids |
Nov. 7, 2000 |
| 6090285 |
Tank treatment assembly |
Jul. 18, 2000 |
| 6059967 |
Distributor device for water conditioner backflush apparatus |
May. 9, 2000 |
| 5951855 |
Filter and hydraulic mixing assembly for water treatment |
Sep. 14, 1999 |
| 5948252 |
Filtering device |
Sep. 7, 1999 |
| 5882531 |
Water filtration technique using granular media |
Mar. 16, 1999 |
| 5858219 |
Cooling tower water treatment system |
Jan. 12, 1999 |
| 5770080 |
Air charged backwashing bioclarifier |
Jun. 23, 1998 |
| 5746914 |
Honey comb filter assembly and method of making the same |
May. 5, 1998 |
| 5658459 |
Dual velocity strainer |
Aug. 19, 1997 |
| 5639377 |
Water treatment system |
Jun. 17, 1997 |
| 5597479 |
Electro-coalescence/magnetic separation (ECMS) system and components for removal of contaminants from water streams, including desalinization |
Jan. 28, 1997 |
| 5584996 |
Apparatus and method for distributing liquid containing evolvable glass into a fluidized bed of a reactor |
Dec. 17, 1996 |
| 5554281 |
Traveling bridge filter system and associated underdrain |
Sep. 10, 1996 |
| 5545319 |
Sieve system for an ion exchange column |
Aug. 13, 1996 |
| 5512174 |
Filtering device for the clarification of liquids |
Apr. 30, 1996 |
| 5482620 |
Permeable ditch underwater water purification apparatus |
Jan. 9, 1996 |
| 5472609 |
Water conditioner backflush device |
Dec. 5, 1995 |
| 5464530 |
Ion exchange methods and systems incorporating regenerant recycling |
Nov. 7, 1995 |
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