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Class Information
Number: 210/348
Name: Liquid purification or separation > Filter
Description: Apparatus in which constituents of a prefilt (usually solids and liquid) are separated by passing the prefilt through a medium having openings which retain at least one constituent.










Sub-classes under this class:

Class Number Class Name Patents
210/417 Alternating oppositely opening liquid distributors 17
210/433.1 Divided filtered, and unfiltered liquid passages 313
210/353 Free cleaning means, e.g., loose abrading particles 26
210/470 Handled 214
210/358 Imperforate drum, medium on arc, chord or end 19
210/500.1 Material 247
210/354 Medium, cleaner or agitator moved by fluid 72
210/359 Movable medium 190
210/405 Movable prefilt distributor 64
210/459 Pipe or plate attached type 138
210/464 Portable receptacle draining type 118
210/456 Prefilt flow distributor or diverter 641
210/349 Pulsation dampener or gas trapping 37
210/455 Receptacle and modified spacing surface or support for filter medium 561
210/357 Relatively movable members interleaved for cleaning 50
210/473 Resting on supporting receiver, e.g., portable 144
210/483 Supported, shaped or superimposed formed mediums 332
210/406 Vacuumized filtrate receiver 346
210/472 Vented 321
210/457 With central pervious tubular receiver 274
210/418 With flow controller for material being treated 230
210/350 With movable means to compress medium 172
210/416.1 With pump, gas pressure, or suction source 928
210/407 With residue removing means or agitation of liquid 193
210/435 Within flow line or flow line connected close casing 430


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8709248 (4944 Apr. 29, 2014
8685238 Point-of-use solar powered water disinfection device and associated custom water storage container Apr. 1, 2014
8679515 Activated carbon associated with alkaline or alkali iodide Mar. 25, 2014
8672145 Urea sorbent Mar. 18, 2014
8632740 Device and methods for collection of biological fluid sample and treatment of selected components Jan. 21, 2014
8608939 Process for removing asphaltenic particles Dec. 17, 2013
8590711 Method for diagnosing the operation of a water purification installation of the filter medium device type, and a diagnostic tool suitable for said method Nov. 26, 2013
8556085 Anti-viral device Oct. 15, 2013
8545705 Apparatus and process for isomerizing a hydrocarbon stream Oct. 1, 2013
8535531 Halogenated resin beds Sep. 17, 2013
8524080 Purification apparatus for contaminated water employing high-voltage DC pulse and subsequent low-voltage DC field Sep. 3, 2013
8501642 Nano-fiber compound solutions, emulsions and gels, production method thereof, Nano-fiber synthetic papers, and production method thereof Aug. 6, 2013
8466257 Process and apparatus for purifying solid salt compositions Jun. 18, 2013
8460208 Flask for preparing a cytological suspension based on a fixing solution Jun. 11, 2013
8443985 Liquid supplying member, negative pressure unit, and liquid discharging apparatus May. 21, 2013
8440088 Priming method for filter May. 14, 2013
8403150 End-cap assembly with pump hose for a filter and filter comprising such an end-cap assembly Mar. 26, 2013
8376145 Device for purification of water from petroleum and / or petroleum-derived products Feb. 19, 2013
8361317 Filter device for a motor vehicle Jan. 29, 2013
8354023 Tank Jan. 15, 2013
8354030 Purification system for cyanotoxic-contaminated water Jan. 15, 2013
8342337 Water sampling device and method for use with a radiation probe Jan. 1, 2013
8273254 Spa water sanitizing system Sep. 25, 2012
8269179 Illumination system and filter system Sep. 18, 2012
8263013 Method for removing micro-bubbles and/or particles from liquid, liquid supply apparatus and immersion exposure apparatus Sep. 11, 2012
8246909 Automated endoscope reprocessor germicide concentration monitoring system and method Aug. 21, 2012
8246835 Apparatus and process for isomerizing a hydrocarbon stream Aug. 21, 2012
8235220 Separator and separator cartridge Aug. 7, 2012
8221567 Filter media and system and method of manufacturing the same Jul. 17, 2012
8215493 Membrane treatment apparatus Jul. 10, 2012
8206648 Liquid container with an extraction chimney Jun. 26, 2012
8187457 Test paper and porous membrane May. 29, 2012
8173018 Fluid filter module including sealed boss May. 8, 2012
8167595 Inlet screen and scroll compressor incorporating same May. 1, 2012
8158075 Etching solution reproducing apparatus and etching solution reproduction method Apr. 17, 2012
8152538 Fluid bonding fitting and assembly and system incorporating the fitting, and method of use Apr. 10, 2012
8128578 Flask for preparing a cytological suspension based on a fixing solution Mar. 6, 2012
8119399 Method and system for collecting cells of a biological specimen Feb. 21, 2012
8071055 Water treatment techniques Dec. 6, 2011
8057672 Disposable multi-layered filtration device for the separation of blood plasma Nov. 15, 2011
8043498 Storm drain protector Oct. 25, 2011
8034301 Test paper and porous membrane Oct. 11, 2011
8025963 Nanoporous filter Sep. 27, 2011
8001801 Water filter removal and installation tool Aug. 23, 2011
7987769 Water dispenser and filter cartridge for use therein Aug. 2, 2011
7981289 Modular fluid treatment apparatus and method Jul. 19, 2011
7972447 Screening arrangement for a dishwasher, and associated apparatus and method Jul. 5, 2011
7931810 Water purification system and method Apr. 26, 2011
7923060 Method of manufacturing ceramic filter Apr. 12, 2011
7910002 Separation Mar. 22, 2011

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