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Class Information
Number: 210/408
Name: Liquid purification or separation > Filter > With residue removing means or agitation of liquid > Diverse, e.g., combined agitators, scrapers, aeration blowback
Description: Apparatus provided with diverse residue removal or agitating means, e.g., agitators, scrapers, brushes, means to add a gas, means to blowback through the filter medium.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8647516 Filtration method with self-cleaning filter assembly Feb. 11, 2014
8617389 Device for filtering the liquid processing medium used in shaping operations performed by cutting Dec. 31, 2013
8608955 Automatic slurry strainer Dec. 17, 2013
8585897 Cylindrical back washing purification apparatus Nov. 19, 2013
8574431 Filter system with gas agitation Nov. 5, 2013
8574436 Displacement filter apparatus Nov. 5, 2013
8556086 Solid-liquid separator using roller system Oct. 15, 2013
8524075 Backwashing fluid filter assembly Sep. 3, 2013
8518273 Method and device for cleaning of filter Aug. 27, 2013
8505740 Solid-liquid separator using roller system Aug. 13, 2013
8440082 Method and apparatus for the solid-liquid-separation of material mixtures and suspensions May. 14, 2013
8361313 Plant and method for the treatment of the recovery cooling fluid in mechanical processing plants Jan. 29, 2013
8303826 Automatic slurry strainer Nov. 6, 2012
8221618 Filter for removing sediment from water Jul. 17, 2012
8201695 Lift type pore-controllable fiber filter Jun. 19, 2012
8197680 Apparatus for waste-water filtration Jun. 12, 2012
8187472 System to enhance and control the pressurization, operating pressures, and flushing of drip dispersal systems May. 29, 2012
8177073 Water processor May. 15, 2012
8153003 Belt filter apparatus Apr. 10, 2012
8132581 Method and system for washing a sedimentation device in a water treatment system using ultrasonic Mar. 13, 2012
8097163 Purification of oil field production water for beneficial use Jan. 17, 2012
8069989 Self-cleaning water filter system Dec. 6, 2011
7972510 Filtration apparatus Jul. 5, 2011
7964105 Method for improving belt press dewatering Jun. 21, 2011
7704382 Gravity type fiber filter Apr. 27, 2010
7481920 Fine-screened grid Jan. 27, 2009
7473375 Method and device for removal of residual products Jan. 6, 2009
7445716 Crossflow pressure liquid filtration with ultrasonic enhancement Nov. 4, 2008
7442295 Water purification and treatment apparatus and treatment process using the apparatus Oct. 28, 2008
7404904 Method and apparatus to clean particulate matter from a toxic fluid Jul. 29, 2008
7395935 Filtering device Jul. 8, 2008
7381323 Filtration apparatus Jun. 3, 2008
7347933 Self-cleaning intake screen Mar. 25, 2008
7344637 Apparatus for removing fine material from a liquid Mar. 18, 2008
7288186 Filtrate immersed activation assembly for disk filters Oct. 30, 2007
7250109 Back-wash filter Jul. 31, 2007
7077957 Overflow screening device Jul. 18, 2006
7055699 Self-cleaning mechanical filter Jun. 6, 2006
7028849 Screen apparatus Apr. 18, 2006
6899807 Solid and liquid separation device May. 31, 2005
6890441 Hydraulic annular washing column, and process for separating solids from a suspension May. 10, 2005
6833071 Displacement filter apparatus Dec. 21, 2004
6833077 Sequential swinging precoat removal and renewal system, filter so equipped and method Dec. 21, 2004
6833069 Magnetic filter Dec. 21, 2004
6830679 Filtration device Dec. 14, 2004
6821444 Self-cleaning fuel oil strainer Nov. 23, 2004
6787046 Pressure liquid filtration with ultrasonic bridging prevention Sep. 7, 2004
6730219 Filter for liquid products May. 4, 2004
6676834 Self-cleaning water filter Jan. 13, 2004
6666976 Self cleaning water filter Dec. 23, 2003

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