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Class Information
Number: 210/196
Name: Liquid purification or separation > Recirculation > Of filtrate
Description: Apparatus in which filtrate is returned to prefilt.










Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8673138 Fuel filter Mar. 18, 2014
8628666 System for solids retention time uncoupling by selective wasting of sludge Jan. 14, 2014
8608953 Metabolic detoxification system and method Dec. 17, 2013
8518249 Versatile biological wastewater treatment system Aug. 27, 2013
8501013 Recirculation shower for aircraft Aug. 6, 2013
8486277 Internal bypass filtration circuit Jul. 16, 2013
8409431 Charging apparatus Apr. 2, 2013
8404111 Fluidized membrane bioreactor Mar. 26, 2013
8323487 Waste water treatment apparatus Dec. 4, 2012
8308939 Efficient arrangement of membrane bioreactors Nov. 13, 2012
8293098 Infiltration/inflow control for membrane bioreactor Oct. 23, 2012
8246817 Deionization filter for fuel cell vehicle coolant Aug. 21, 2012
8187461 System and method for processing and reusing graywater including for use in a home and garden May. 29, 2012
8157992 Device and method for the cleaning of lubricant and a lubricant circuit Apr. 17, 2012
8147683 Portable lubricant filtration system and method Apr. 3, 2012
8110097 Circulating water washing system toilet Feb. 7, 2012
8097152 Apparatus for removal of oil from ice Jan. 17, 2012
8057673 System and method for treating wastewater containing ammonia Nov. 15, 2011
8054932 Filter medium for strainers used in nuclear reactor emergency core cooling systems Nov. 8, 2011
8048319 Filter medium for strainers used in nuclear reactor emergency core cooling systems Nov. 1, 2011
8025798 Modular biological fluidized bed reactor system Sep. 27, 2011
8017001 System for mineral hardness management Sep. 13, 2011
8011330 Systems and methods for engine emissions reduction on ships Sep. 6, 2011
7992667 Oil cooling and filtering system, kit and apparatus Aug. 9, 2011
7981286 Substrate processing apparatus and method of removing particles Jul. 19, 2011
7980395 Cross-flow filtration system Jul. 19, 2011
7967978 Method and apparatus for filter conditioning Jun. 28, 2011
7947170 Apparatus for treatment of chemical mechanical polishing fluid May. 24, 2011
7947171 Cooling device for fuel cell May. 24, 2011
7938959 Fryer oil usage system May. 10, 2011
7909173 Combined centrifugal separator Mar. 22, 2011
7892431 Method and device for purification of effluent Feb. 22, 2011
7883627 Automated fuel polishing system and methods Feb. 8, 2011
7862890 Biomedia apparatus and method of use Jan. 4, 2011
7846328 Treatment system for enhanced water and wastewater nutrient removal Dec. 7, 2010
7824555 System and method for water restoration Nov. 2, 2010
7820048 Method and system for treating organically contaminated waste water Oct. 26, 2010
7803272 Water treatment system Sep. 28, 2010
7757378 Resin impregnation process with enhanced fluidic control Jul. 20, 2010
7731841 Flow control systems and methods for artificial ponds Jun. 8, 2010
7718057 Wastewater treatment system May. 18, 2010
7718061 Apparatus for inhibiting fines carryover May. 18, 2010
7713410 Wastewater treatment apparatus May. 11, 2010
7708880 Chemical liquid supply apparatus and a chemical liquid supply method May. 4, 2010
7704390 Wastewater treatment system Apr. 27, 2010
7695624 Method and system for treating water and utilizing a membrane filtering system Apr. 13, 2010
7691170 Process and device for treating raw manure Apr. 6, 2010
7686966 Automatic tank cleaning system Mar. 30, 2010
7686962 Process control oxidation Mar. 30, 2010
7678265 Arrangement for separating environmentally harmful substances from a polluted mass Mar. 16, 2010

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