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Class Information
Number: 210/108
Name: Liquid purification or separation > Flow, fluid pressure or material level, responsive > Filter cleaning > Backwash or blowback
Description: Apparatus comprising backwash or blowback means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7608183 |
Control valve assembly |
Oct. 27, 2009 |
| 7556730 |
Reclaimed water reuse device |
Jul. 7, 2009 |
| 7530463 |
Backwashable filtering device |
May. 12, 2009 |
| 7481930 |
Filter having a filter layer that forms a protective barrier to prevent clogging of a gravel-less underdrain and method of making the same |
Jan. 27, 2009 |
| 7413649 |
Treatment apparatus with modular chemical containing units having one-way valve assemblies |
Aug. 19, 2008 |
| 7399419 |
Modular filtration system |
Jul. 15, 2008 |
| 7381323 |
Filtration apparatus |
Jun. 3, 2008 |
| 7370445 |
Sludge removal |
May. 13, 2008 |
| 7320760 |
Cleaning efficiency testing method and apparatus for a filter in a filtering system |
Jan. 22, 2008 |
| 7288186 |
Filtrate immersed activation assembly for disk filters |
Oct. 30, 2007 |
| 7276171 |
Method for cleaning separation membrane |
Oct. 2, 2007 |
| 7270745 |
Liquid filtration apparatus embodying super-buoyant filtration particles |
Sep. 18, 2007 |
| 7258784 |
Solid liquid filtration apparatus and method |
Aug. 21, 2007 |
| 7204930 |
Water purification system and method |
Apr. 17, 2007 |
| 7198713 |
Installation for the removal and the deactivation of organisms in the ballast water |
Apr. 3, 2007 |
| 7192528 |
Self-cleaning filter apparatus |
Mar. 20, 2007 |
| 7166230 |
Apparatus and method for separating and filtering particles and organisms from flowing liquids |
Jan. 23, 2007 |
| 7156983 |
Swimming pool backwash assembly |
Jan. 2, 2007 |
| 7122116 |
Water treatment system |
Oct. 17, 2006 |
| 7055699 |
Self-cleaning mechanical filter |
Jun. 6, 2006 |
| 7052599 |
Method and apparatus for reuse of abrasive fluid used in the manufacture of semiconductors |
May. 30, 2006 |
| 7001505 |
Slurry monitoring system |
Feb. 21, 2006 |
| 6998046 |
Filter system and methods of operating the same |
Feb. 14, 2006 |
| 6959818 |
Filter and filter cleaning apparatus and related methods |
Nov. 1, 2005 |
| 6958118 |
Self-cleaning water filtration system and method |
Oct. 25, 2005 |
| 6951614 |
Method and device for filtering liquids, especially drinks |
Oct. 4, 2005 |
| 6887372 |
Portable drilling water filter with self-cleaning system |
May. 3, 2005 |
| 6878294 |
Running method and treatment system for spiral wound membrane element and spiral wound membrane module |
Apr. 12, 2005 |
| 6878293 |
Automatic valve assembly for water circulation systems |
Apr. 12, 2005 |
| 6796776 |
Pumping system and method with improved screen |
Sep. 28, 2004 |
| 6783667 |
Screen unit for viscous mass |
Aug. 31, 2004 |
| 6752920 |
Integral valved filter |
Jun. 22, 2004 |
| 6730219 |
Filter for liquid products |
May. 4, 2004 |
| 6709575 |
Extended life combination filter |
Mar. 23, 2004 |
| 6662636 |
Method of reducing fouling in filters for industrial water system analytical devices |
Dec. 16, 2003 |
| 6638422 |
Liquid filtration apparatus and method embodying filtration particles having specific gravity less than liquid being filtered |
Oct. 28, 2003 |
| 6607660 |
Liquid filtration device with backwashing feature |
Aug. 19, 2003 |
| 6596158 |
Waste water filtration tank |
Jul. 22, 2003 |
| 6585886 |
Aerobic microbiological wastewater treatment reactor |
Jul. 1, 2003 |
| 6579447 |
Self-cleaning pre-filter system |
Jun. 17, 2003 |
| 6562246 |
Pressurized backflush system |
May. 13, 2003 |
| 6524471 |
Backwash control system for a filter unit used in a machine tool system |
Feb. 25, 2003 |
| 6497814 |
Apparatus for cleaning a swimming pool water filter |
Dec. 24, 2002 |
| 6485649 |
Method and device for the production of pure water |
Nov. 26, 2002 |
| 6423212 |
Microbial resistant water purification and collection system |
Jul. 23, 2002 |
| 6402954 |
Method and apparatus for monitoring and cleaning a fluid filter system |
Jun. 11, 2002 |
| 6402962 |
Self-cleaning filter with bypass |
Jun. 11, 2002 |
| 6378706 |
In-situ modular cleanable filter |
Apr. 30, 2002 |
| 6342163 |
Apparatus and method for sanitizing and cleaning a filter system |
Jan. 29, 2002 |
| 6283305 |
Filter apparatus with backwashing mechanism |
Sep. 4, 2001 |
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