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Class Information
Number: 210/117
Name: Liquid purification or separation > Flow, fluid pressure or material level, responsive > Discharge of treated material > Check valve controlled
Description: Apparatus including flow control means allowing flow in only one direction.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7449106 |
Suction-driven fluid filtration system for recreational or emergency use |
Nov. 11, 2008 |
| 7402240 |
Method and system to flush an RO system |
Jul. 22, 2008 |
| 7387210 |
Filter cartridge and manifold for a water purification system |
Jun. 17, 2008 |
| 7316774 |
Fluid treatment system |
Jan. 8, 2008 |
| 7285210 |
Zero waste reverse osmosis water filtering |
Oct. 23, 2007 |
| 7273544 |
Sludge extractor |
Sep. 25, 2007 |
| 7255141 |
Beverage bottling plant for filling bottles with a liquid beverage filling material, a container filling plant container filling machine, and a filter apparatus for filtering a liquid beverage |
Aug. 14, 2007 |
| 7238278 |
Apparatus for purifying water |
Jul. 3, 2007 |
| 7232518 |
Filter device |
Jun. 19, 2007 |
| 7182858 |
Multiple barrier filter apparatus |
Feb. 27, 2007 |
| 7182854 |
Sanitation system |
Feb. 27, 2007 |
| 7090779 |
Manually operable water purifying device |
Aug. 15, 2006 |
| 7077208 |
Method and system for directing fluid flow |
Jul. 18, 2006 |
| 7048848 |
Hybrid spin-on filter |
May. 23, 2006 |
| 7017611 |
One-piece manifold for a reverse osmosis system |
Mar. 28, 2006 |
| 7007759 |
Method and system for directing fluid flow |
Mar. 7, 2006 |
| 6797160 |
Percolating steeper |
Sep. 28, 2004 |
| 6782917 |
Reciprocating cone anti-drainback apparatus |
Aug. 31, 2004 |
| 6733664 |
Filtration device for separation of concretions, fragments or other body material from liquids |
May. 11, 2004 |
| 6638435 |
Method for draining a barge or other like container |
Oct. 28, 2003 |
| 6605215 |
Hybrid spin-on filter |
Aug. 12, 2003 |
| 6485635 |
Filter, in particular for the lubricating oil of an internal combustion engine |
Nov. 26, 2002 |
| 6485636 |
Dual filter for diesel engine |
Nov. 26, 2002 |
| 6468435 |
Automatic valved filter assembly |
Oct. 22, 2002 |
| 6461507 |
Continuous squeeze-dewatering device |
Oct. 8, 2002 |
| 6436282 |
Flow control module for RO water treatment system |
Aug. 20, 2002 |
| 6383385 |
Filter unit for the physical elimination of microbes, suspended matter and solids from water |
May. 7, 2002 |
| 6334951 |
Reverse osmosis water treatment system with tube connecting unit |
Jan. 1, 2002 |
| 6274034 |
Dialysis system and cleaning and priming method thereof |
Aug. 14, 2001 |
| 6251265 |
Pressure regulating sludge filter |
Jun. 26, 2001 |
| 6235192 |
Biflow drier with improved filtration |
May. 22, 2001 |
| 6193884 |
Dripless purification manifold and cartridge |
Feb. 27, 2001 |
| 6171481 |
Water purifier |
Jan. 9, 2001 |
| 6110360 |
Low pressure reverse osmosis water purifying system |
Aug. 29, 2000 |
| 6036850 |
Filtration system for zebra mussels |
Mar. 14, 2000 |
| 6019890 |
Fuel filter with hand primer |
Feb. 1, 2000 |
| 6013189 |
Vented batch liquid purifier |
Jan. 11, 2000 |
| 6007710 |
Reverse osmosis membrane housing with integral wide-area check valve and shut-off valve, optional pressure gauge, and optional large-volume high-flow membrane cartridge |
Dec. 28, 1999 |
| 5965021 |
Hydrocyclone |
Oct. 12, 1999 |
| 5913767 |
Worm centrifuge with centrifugal valve |
Jun. 22, 1999 |
| 5893973 |
High efficiency backflush system for a filter |
Apr. 13, 1999 |
| 5888382 |
Filtration tank and means for subsequent purification of waste water |
Mar. 30, 1999 |
| 5868931 |
Primer system for filter assembly |
Feb. 9, 1999 |
| 5868924 |
Water purifier |
Feb. 9, 1999 |
| 5792344 |
Liquid separation container for a centrifugal separator |
Aug. 11, 1998 |
| 5725104 |
Valve construction for high density pulp cleaner |
Mar. 10, 1998 |
| 5720885 |
Process and device for the treatment and/or dewatering of sludge taken from waste water cesspools, especially small-scale sewage treatment plants |
Feb. 24, 1998 |
| 5693217 |
Fluid circuit with a primary stream filter and a bypass stream centrifuge |
Dec. 2, 1997 |
| 5676828 |
Apparatus and method for modifying waste water |
Oct. 14, 1997 |
| 5607579 |
Apheresis apparatus for separating an intermediate density component from whole blood |
Mar. 4, 1997 |
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