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Class Information
Number: 210/167.21
Name: Liquid purification or separation >
Description:










Sub-classes under this class:

Class Number Class Name Patents
210/138 With time control 420
210/141 With program actuator 121
210/143 Automatic control 1,120
210/150 With gas-liquid surface contact means 786
210/153 Structural installation 72
210/173 Comminuting 156
210/175 With heater or heat exchanger 402
210/188 With gas separator 698
210/189 Plural chambers with movement of granules therebetween 181
210/190 With external supply means for regenerating medium, e.g., water softening system 113
210/192 With preliminary chemical manufacture 590
210/193 With precoat adding or applying means 140
210/194 Recirculation 445
210/198.1 With means to add treating material 754
210/222 Magnetic 1,017
210/224 Sectional chamber press type 67
210/232 With repair or assembling means 2,127
210/239 Convertible 54
210/241 With movable support 454
210/243 Electrical insulating or electricity discharging 493
210/244 Portable receptacle with hood or closure 111
210/247 Filtrate splash plate and/or deflector 94
210/248 With drip, overflow or content draining feature 379
210/249 Bracket or leg support for static separator assembly 157
210/251 Combined 259
210/252 Serially connected distinct treating with or without storage units 389
210/263 Particulate material type separator, e.g., ion exchange or sand bed 273
210/294 Diverse distinct separators 95
210/321.6 Casing divided by membrane into sections having inlet(s) and/or outlet(s) 599
210/322 Plural distinct separators 92
210/348 Filter 143
210/511 Liquid as separating medium 269
210/512.1 Tangential flow or centrifugal fluid action 1,025
210/513 Gravitational separator 224
210/541 Adjuncts 294
210/542 Miscellaneous 112
210/600 Processes 115
210/85 With alarm, indicator, register, recorder, signal or inspection means 777
210/900 Ultra pure water (e.g., conductivity water) 148
210/901 Specified land fill feature (e.g., prevention of ground water fouling) 92
210/902 Materials removed 44
210/918 Miscellaneous specific techniques 27
210/928 Paper mill waste (e.g., white water, black liquor, etc.) treated 269
210/929 Hemoultrafiltrate volume measurement or control processes 150
210/930 Paint detackifying 88
210/96.1 Constituent mixture variation responsive 737
210/97 Flow, fluid pressure or material level, responsive 582
210/DIG.13 Part flow-full flow 47
210/DIG.17 Twist-on 272
210/DIG.3 Belt alignment 27
210/DIG.5 Coalescer 338
210/DIG.6 Dehydrators 66
210/DIG.7 Drier blocks 12
210/DIG.8 Fat fryer 117
210/DIG.9 Floating cover 24


Patents under this class:

Patent Number Title Of Patent Date Issued
8702981 Wedge-shaped and stackable filter cartridges Apr. 22, 2014
8679330 Integrated aquarium filter assembly including filter media components and an upstream water pump Mar. 25, 2014
8534229 Pump-assisted gravel vacuum Sep. 17, 2013
8524077 Shower tube cleaning device for filter for water tank Sep. 3, 2013
8262907 Composite sock filter for aquariums Sep. 11, 2012
8206579 Aquarium filtration system Jun. 26, 2012
8197681 Submersible filter system for stock tanks and ornamental ponds Jun. 12, 2012
8017007 Filtering unit for an aquarium Sep. 13, 2011
7927483 Filter with self-positioning cartridge arrangement Apr. 19, 2011
7810452 Basin capable of containing aquatic animals, especially experimental animals, and relating housing system Oct. 12, 2010
7744355 Submersable centrifugal magnetically affixed current changing aquarium pump Jun. 29, 2010
7736496 Dual pump water treatment system for automatic top off Jun. 15, 2010
7682503 Filtration and surge with no moving parts Mar. 23, 2010
7651609 Filter with self-positioning cartridge arrangement Jan. 26, 2010
7638044 Aquarium filter housing with rounded bottom Dec. 29, 2009
7628912 Manufacturing device and application device for liquid containing micro-nano bubbles Dec. 8, 2009
7578933 Biological filter for aquatic ecosystems Aug. 25, 2009
7560021 Selector valve of a pressure filter for aquariums or ponds Jul. 14, 2009
7553411 Filter cartridge Jun. 30, 2009
7544290 Aquarium Jun. 9, 2009
7459075 Process control oxidation Dec. 2, 2008
7445706 Protein skimmer Nov. 4, 2008
7429321 Aquarium filter cartridge and filtration system Sep. 30, 2008
7335297 Power aquarium cleaning/gravel vacuum Feb. 26, 2008
7316775 Air-powered filter arrangement Jan. 8, 2008
7314741 Anaerobic ammonium oxidation for water treatment in recirculating aquaculture Jan. 1, 2008
7311822 Aquarium Dec. 25, 2007
7294257 Water filter Nov. 13, 2007
7288189 Multi-faceted intake filter for an aquarium Oct. 30, 2007
7276169 Method for filtering water in an aquarium, a water cultivation tank and similar water bonds, and corresponding filtering system Oct. 2, 2007
7264714 Protein skimmer Sep. 4, 2007
7232519 Fish tank powerhead magnetic holder Jun. 19, 2007
7214314 Cleaning apparatus and method May. 8, 2007
7211188 Solar powered aquarium May. 1, 2007
7208084 Modular aquarium filter Apr. 24, 2007











 
 
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