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Class Information
Number: 210/409
Name: Liquid purification or separation > Filter > With residue removing means or agitation of liquid > Fluid cleaning
Description: Apparatus having (1) means to add a fluid to or trap a fluid within the filter unit for cleaning purposes or (2) constructed to backwash the filter medium.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7452463 |
Apparatus for treating water |
Nov. 18, 2008 |
| 7411163 |
Device for providing a melt |
Aug. 12, 2008 |
| 7404904 |
Method and apparatus to clean particulate matter from a toxic fluid |
Jul. 29, 2008 |
| 7396462 |
Filtering device |
Jul. 8, 2008 |
| 7351335 |
Filter module |
Apr. 1, 2008 |
| RE40098 |
Food debris filtering apparatus for dishwasher and method thereof |
Feb. 26, 2008 |
| 7309366 |
Bag cleaning compressed air nozzle |
Dec. 18, 2007 |
| 7303672 |
Liquid/solid separator and method |
Dec. 4, 2007 |
| 7294257 |
Water filter |
Nov. 13, 2007 |
| 7267236 |
Water treatment device |
Sep. 11, 2007 |
| 7250109 |
Back-wash filter |
Jul. 31, 2007 |
| 7241382 |
Method and system for filtering sediment-bearing fluids |
Jul. 10, 2007 |
| 7122119 |
Sieve separator |
Oct. 17, 2006 |
| 7094339 |
Liquid-treating method |
Aug. 22, 2006 |
| 7077957 |
Overflow screening device |
Jul. 18, 2006 |
| 7063783 |
Strainer |
Jun. 20, 2006 |
| 7028849 |
Screen apparatus |
Apr. 18, 2006 |
| 7001506 |
Self-cleaning circulatin system and method |
Feb. 21, 2006 |
| 6986849 |
Liquid/solid separator and method |
Jan. 17, 2006 |
| 6977040 |
Integrated filter housing with associated cleaning system and method |
Dec. 20, 2005 |
| 6966988 |
Flushing adapter for filter |
Nov. 22, 2005 |
| 6955266 |
Strainer |
Oct. 18, 2005 |
| 6953529 |
Apparatus and method of particulate removal from liquids |
Oct. 11, 2005 |
| 6949183 |
Element manufacturing system having suction jig for accumulating fibers contained in fiber solution |
Sep. 27, 2005 |
| 6926839 |
Method and apparatus for removing particulate contaminants from commercial laundry waste water |
Aug. 9, 2005 |
| 6899807 |
Solid and liquid separation device |
May. 31, 2005 |
| 6878292 |
Filter device |
Apr. 12, 2005 |
| 6833071 |
Displacement filter apparatus |
Dec. 21, 2004 |
| 6833077 |
Sequential swinging precoat removal and renewal system, filter so equipped and method |
Dec. 21, 2004 |
| 6817475 |
Multi-stage filter cleaning system with water recycling |
Nov. 16, 2004 |
| 6773612 |
Sloped screen separator that removes solids from a manure slurry |
Aug. 10, 2004 |
| 6749069 |
Equipment for filtering a liquid |
Jun. 15, 2004 |
| 6709581 |
Pool filter cleaner |
Mar. 23, 2004 |
| 6672462 |
Method and apparatus for removing particulate contaminants from commercial laundry waste water |
Jan. 6, 2004 |
| 6641720 |
Apparatus and methods for separating solids from flowing liquids or gases |
Nov. 4, 2003 |
| 6634372 |
High efficiency cleaning of rotating filter media |
Oct. 21, 2003 |
| 6620314 |
Production of pyrogen controlled water |
Sep. 16, 2003 |
| 6540911 |
Dewatering system |
Apr. 1, 2003 |
| 6520343 |
Filtering device |
Feb. 18, 2003 |
| 6505744 |
Solid-liquid separation equipment in particular for biological purification of wastewater |
Jan. 14, 2003 |
| 6502434 |
Effluent shower for pulp washer |
Jan. 7, 2003 |
| 6468421 |
Bag filter wash-down system with vacuum break pulse |
Oct. 22, 2002 |
| 6461503 |
Interengaged rotary disc filters |
Oct. 8, 2002 |
| 6458281 |
Method for separating solid particles from a liquid in a dish-washer |
Oct. 1, 2002 |
| 6439273 |
Method and apparatus for cleaning filter candles in a candle filter |
Aug. 27, 2002 |
| 6406622 |
Apparatus for filtering a fluid |
Jun. 18, 2002 |
| 6398038 |
Filtration system utilizing a vortex mechanical power filter |
Jun. 4, 2002 |
| 6365054 |
Plant for filling containers and a method for operating a plant for filling containers |
Apr. 2, 2002 |
| 6332977 |
Apparatus for steam sterilizing and recycling leaf-filter aids |
Dec. 25, 2001 |
| 6267879 |
Continuous liquid filtering apparatus with multi-layer sintered filtering element |
Jul. 31, 2001 |
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