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| Class 210 | LIQUID PURIFICATION OR SEPARATION |
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![[List of Pre Grant Publications for class 210 subclass 600]](../as.gif) | ![[List of Patents for class 210 subclass 600]](../ps.gif) | 600 | PROCESSES |
| | 601 |  Treatment by living organism |
| | 602 |  Including plant or animal of higher order |
| | 603 | Including collecting or storing gas (e.g., fuel, carbon monoxide, etc.) |
| | 605 | Anaerobically, with subsequently aerobically treating liquid |
| | 606 | Adding enzyme or releasing same by treating microorganism |
| | 607 | Dividing, treating, and recombining liquid |
| | 608 | Regulating floating constituent |
| | 609 | Including dewatering sludge |
| | 610 | Including adding ancillary growth medium for microorganism |
| | 612 | And regulating temperature during biological step |
| | 614 | Controlling process in response to stream constituent or reactant concentration |
| | 615 | Utilizing contact surfaces supporting microorganism (e.g., trickling filter, etc.) |
| | 620 | Aerobic treatment |
| | 621 |  Recirculating to prior step |
| | 622 |  Of separated liquid |
| | 623 | Of sludge or separated solid |
| | 629 | And internally circulating the liquid |
| | 630 | And anaerobic treatment |
| | 631 | And additional treating agent other than mere mechanical manipulation (e.g., chemical, sorption, etc.) |
| | 632 | Treating by enzyme |
| | 633 | Extracting utilizing solid solute |
| | 635 | Liquid/liquid or gel type (i.e., jellylike) chromatography |
| | 636 | Including cleaning or sterilizing of apparatus |
| | 637 | Including regulating pressure to control constituent gradient at membrane or to prevent rupture of membrane |
| | 638 | Including ion exchange or other chemical reaction |
| | 639 | Including prior use of additive (e.g., changing pH, etc.) |
| | 640 | Passing through membrane in vapor phase |
| | 641 | Utilizing plural diverse membranes |
| | 642 | Extracting water from brine utilizing liquid/liquid solvent or colloidal extraction |
| | 643 | Utilizing liquid membrane (e.g., emulsion) in liquid/liquid solvent or colloidal extraction |
| | 644 | Diffusing or passing through septum selective as to material of a component in liquid/liquid solvent or colloidal extraction |
| | 645 | Biological fluid (e.g., blood, urine, etc.) |
| | 648 | Including regenerating or rehabilitating the extracting liquid in liquid/liquid solvent or colloidal extraction |
| | 649 | Diffusing or passing through septum selective as to material of a component of liquid |
| | 656 | Chromatography |
| | 657 | Utilizing rotating column |
| | 658 | Utilizing paper or thin layer plate |
| | 659 | Including liquid flow diversion |
| | 660 | Ion exchange or selective sorption |
| | 661 | By passing through suspended bed |
| | 662 | And liquid testing or volume measuring |
| | 663 | Including diverse separating or treating of liquid |
| | 664 | By distilling or degassing |
| | 665 | By making an insoluble substance or accreting suspended constituents |
| | 668 | By chemically modifying or inhibiting dispersed constituent |
| | 669 | Prior to ion exchange or sorption |
| | 670 | Including rehabilitating or regenerating exchange material or sorbent |
| | 671 | Of oil sorbent material |
| | 672 | Fractional, selective, or partial type |
| | 673 | Utilizing gas, water, or chemical oxidizing or reducing agent |
| | 674 | Utilizing organic regenerant |
| | 675 | Rehabilitating or regenerating in diverse zone or chamber |
| | 677 | Using conserved or recirculated fluid |
| | 678 | Including liquid flow direction change |
| | 679 | Utilizing exchange or sorbent material associated with inert material |
| | 681 | Removing ions |
| | 682 | Radioactive |
| | 683 | Anions |
| | 687 | Calcium or magnesium (e.g., hardness, water softening, etc.) |
| | 688 | Heavy metal |
| | 689 | Sorbing water from diverse liquid |
| | 690 | Sorbing organic constituent |
| | 695 | Using magnetic force |
| | 696 | Preventing, decreasing, or delaying precipitation, coagulation or flocculation |
| | 702 | Making an insoluble substance or accreting suspended constituents |
| | 703 | Effecting flotation |
| | 708 | Including emulsion breaking |
| | 709 | Controlling process in response to stream condition |
| | 710 | Treating the insoluble substance |
| | 712 | Including recycling |
| | 714 | Seeding |
| | 716 | Including step of manufacturing inorganic treating agent |
| | 718 | Including degassing |
| | 719 | Including chemical reduction |
| | 721 | Including oxidation |
| | 723 | Utilizing precipitant, flocculant, or coagulant, each with accelerator or with each other or plural precipitants, flocculants, or coagulants |
| | 729 | Utilizing organic precipitant |
| | 737 | Including temperature change |
| | 738 | Including agitation |
| | 739 | Including controlling process in response to a sensed condition |
| | 740 | Density or specific gravity sensing |
| | 741 | Pressure sensing |
| | 742 | Temperature sensing |
| | 743 | pH sensing |
| | 744 | Level sensing |
| | 745 | Turbidity or optically sensing |
| | 746 | Electrical property sensing |
| | 747.1 | Including geographic feature |
| | 747.2 | Stormwater treatment |
| | 747.4 | Dredging sediments/water mixture from underwater beds treated |
| | 747.5 | Body of freshwater, surface flowing freshwater, or body of saltwater |
| | 747.7 | Groundwater treatment |
| | 747.9 | Utilizing artificial waste pond or pit (e.g., waste lagoon, wastewater pond, etc.) |
| | 748.01 | Utilizing electrical or wave energy directly applied to liquid or material being treated |
| | 748.02 | Sound waves |
| | 748.03 | Destroying living organisms |
| | 748.04 | Destroying/degradation of chemical contaminant |
| | 748.05 | Separating particles |
| | 748.06 | Laser |
| | 748.07 | Microwaves |
| | 748.08 | Infrared radiation |
| | 748.09 | Visible light |
| | 748.1 | Ultraviolet radiation |
| | 748.16 | Including chemical treatment |
| | 749 | Chemical treatment |
| | 750 | Including degassing |
| | 752 | Plural spaced feedings |
| | 753 | Utilizing halogen or halogen containing material |
| | 757 | By chemical reduction |
| | 758 | By oxidation |
| | 759 | Utilizing peroxy compound (e.g., hydrogen peroxide, peracid, etc.) |
| | 760 | Utilizing ozone |
| | 761 | Liquid phase high temperature and pressure (e.g., "wet air", etc.) |
| | 763 | Catalytic |
| | 764 | Destroying microorganisms |
| | 765 | Including liquid recirculation |
| | 766 | Including temperature change |
| | 767 | Separating |
| | 768 | Including treating separated solids |
| | 769 | Destroying cake or solid component |
| | 770 | Including drying (e.g., by squeezing or heating, etc.) |
| | 772 | Washing with a fluid other than the prefilt |
| | 773 | Including preliminary conversion to liquid state |
| | 774 | Including temperature change |
| | 776 | Skimming |
| | 777 | Including precoating filter medium with filter aid |
| | 779 | Discharging residue to prefilt |
| | 780 | Including movement of filter during filtration |
| | 781 | Centrifugally extracting |
| | 783 | Rotating belt |
| | 784 | Rotating drum |
| | 785 | Cleaning filter utilizing wave energy (e.g., vibrating, pulsating, etc.) |
| | 786 | Of particulate bed (e.g., fluidized or moving bed, etc.) |
| | 787 | Cyclonic, or centrifugal (e.g., whirling or helical motion or by vortex, etc.) |
| | 790 | Dividing and recombining |
| | 791 | Rehabilitating or regenerating filter medium |
| | 799 | Filtering immiscible liquids |
| | 800 | Utilizing gravitational force |
| | 801 | Including change of mainstream flow direction |
| | 803 | Including specified feature of settled solids removal |
| | 804 | And additional diverse separation |
| | 805 | And recirculating liquid |
| | 806 | Plural separating |
| | 807 | Utilizing particulate bed |
| | 808 | Including specified pressure change |
| | 85 | WITH ALARM, INDICATOR, REGISTER, RECORDER, SIGNAL OR INSPECTION MEANS |
| | 86 | Material level or thickness responsive |
| | 87 | Responsive to fluid flow |
| | 90 | Fluid pressure responsive |
| | 91 | Position or extent of motion |
| | 92 | Test valve |
| | 93 | In effluent conduit |
| | 94 | Transparent |
| | 96.1 | CONSTITUENT MIXTURE VARIATION RESPONSIVE |
| | 97 | FLOW, FLUID PRESSURE OR MATERIAL LEVEL, RESPONSIVE |
| | 98 | Fluid current controlled cyclic system |
| | 99 | Prefilt deverting to drain by prefilt accumulation |
| | 100 | Flow cut-off requiring reset |
| | 101 | Proportionate feed means |
| | 102 | Programming plural units |
| | 103 | Diverse sensing means |
| | 106 | Filter cleaning |
| | 109 | Discharge of treated material |
| | 110 | With separator inlet control |
| | 111 | Responsive to prefilt accumulation or filter clogging |
| | 112 | Heavier constituent |
| | 113 | By weight of solids |
| | 114 | By treated liquid accumulation |
| | 115 | With lighter constituent outlet control |
| | 116 | Permitted by filtrate accumulation |
| | 117 | Check valve controlled |
| | 120 | Vent control |
| | 121 | Float |
| | 130 | Fluid pressure responsive by-pass |
| | 131 | By movement of separation medium |
| | 132 | With additional separation or treating means |
| | 133 | In inlet and outlet closure header |
| | 134 | Plural elements controlled |
| | 136 | Check valve |
| | 137 | Maintaining stream pressure or flow |
| | 138 | WITH TIME CONTROL |
| | 141 | WITH PROGRAM ACTUATOR |
| | 143 | AUTOMATIC CONTROL |
| | 144 | Responsive to vibration or unbalance |
| | 145 | Responsive to rotation |
| | 148 | Container movement operated |
| | 149 | Thermal |
| | 150 | WITH GAS-LIQUID SURFACE CONTACT MEANS |
| | 153 | STRUCTURAL INSTALLATION |
| | 154 | Flume stream type |
| | 155 | Plural or diverse screens |
| | 156 | Fluid stream or residue operated |
| | 158 | With cleaner for movable strainer |
| | 159 | With cleaner and means to remove residue therefrom |
| | 160 | Endless belt strainer |
| | 161 | Revolving strainer |
| | 162 | Fixed strainer |
| | 163 | Grated inlet surface drain |
| | 167.01 | Closed circulating system |
| | 167.02 | For lubrication system |
| | 167.03 | Having magnetic treating means |
| | 167.04 | Plural separators |
| | 167.06 | With heating or cooling means |
| | 167.08 | Separator for transmission system |
| | 167.09 | With separator cleaning means |
| | 167.1 | For swimming pool or spa (e.g., skimmer, etc.) |
| | 167.11 | With means to add treating material |
| | 167.12 | Separator external to swimming pool or spa |
| | 167.15 | Separator for use on swimming pool or spa bottom and separator for use at water surface |
| | 167.16 | Separator for use on swimming pool or spa bottom |
| | 167.18 | Skimmer arm at skimmer opening at water surface |
| | 167.19 | Mesh or screen filter at or near water surface |
| | 167.21 | For aquarium |
| | 167.22 | Separator using living organism |
| | 167.23 | Separator or part thereof associated with bottom of aquarium (e.g., means positioned under gravel, etc.) |
| | 167.25 | Particulate filter or particulate sorbent |
| | 167.26 | Separator with aerator |
| | 167.27 | Separator mounted on top edge of aquarium wall |
| | 167.28 | For cooking oil system |
| | 167.29 | Having magnetic treating means |
| | 167.3 | With means to add treating material |
| | 167.31 | Plural separators |
| | 167.32 | With heating or cooling means |
| | 170.01 | Geographic |
| | 170.02 | For fishpond |
| | 170.03 | For stormwater treatment (e.g., rainwater runoff, stormsewer treatment, etc.) |
| | 170.04 | For excavating means |
| | 170.05 | Floating means |
| | 170.06 | Separator with aerator |
| | 170.07 | Groundwater |
| | 170.08 | Septic system including drain field or leach field or waste liquid treatment system |
| | 170.09 | Body of freshwater (e.g., pond, lake, reservoir, etc.) |
| | 170.1 | Surface flowing freshwater (e.g., stream, river, ditch, canal, etc.) |
| | 170.11 | Body of saltwater (e.g., sea, ocean, etc.) |
| | 171 | Machinery |
| | 172.1 | Separator ancillary to storage tank |
| | 173 | COMMINUTING |
| | 175 | WITH HEATER OR HEAT EXCHANGER |
| | 176 | Thermal diffusion |
| | 177 | With treating fluid addition |
| | 179 | With mechanical agitator or movable separator |
| | 180 | Vapor or gas removal |
| | 181 | Flow line connected in series with distinct separator |
| | 182 | Diverse separators |
| | 184 | For filter |
| | 187 | Within gravitational separator |
| | 188 | WITH GAS SEPARATOR |
| | 189 | PLURAL CHAMBERS WITH MOVEMENT OF GRANULES THEREBETWEEN |
| | 190 | WITH EXTERNAL SUPPLY MEANS FOR REGENERATING MEDIUM, E.G., WATER SOFTENING SYSTEM |
| | 192 | WITH PRELIMINARY CHEMICAL MANUFACTURE |
| | 193 | WITH PRECOAT ADDING OR APPLYING MEANS |
| | 194 | RECIRCULATION |
| | 195.1 | Serially connected distinct treating or storage units |
| | 195.2 | With semipermeable membrane, e.g., dialyzer, etc. |
| | 195.3 | With sediment recycle means directly to main stream |
| | 196 | Of filtrate |
| | 197 | From bottom of separator |
| | 198.1 | WITH MEANS TO ADD TREATING MATERIAL |
| | 198.2 | Chromatography |
| | 199 | Spaced along flow path |
| | 200 | Plural distinct separators |
| | 205 | With distinct reactor tank, trough or compartment |
| | 209 | Directly applied to separator |
| | 210 | To interior of moving filter, e.g., drum |
| | 211 | Through separator supporting rotary shaft |
| | 212 | With stationary casing closure feature |
| | 213 | With coaxial rotary impeller or distributor |
| | 214 | With stationary mount for movable distributor |
| | 215 | With effluent dividing means |
| | 216 | Moving filter medium |
| | 218 | Gas removed from closed tank |
| | 219 | With mechanical agitator |
| | 220 | Submerged fluid inlet |
| | 222 | MAGNETIC |
| | 224 | SECTIONAL CHAMBER PRESS TYPE |
| | 225 | With residue removal or liquid agitation |
| | 226 | With porous filler |
| | 227 | Medium clamped in joint |
| | 230 | With repair or assembling means |
| | 231 | Plates or frames |
| | 232 | WITH REPAIR OR ASSEMBLING MEANS |
| | 233 | Piercing or closure knock out means |
| | 234 | Removable treatment part with normally disabled flow controller |
| | 235 | Placement of container opens flow controller |
| | 236 | Sliding or rolling on guide means |
| | 237 | Hoist or handle means |
| | 239 | CONVERTIBLE |
| | 241 | WITH MOVABLE SUPPORT |
| | 243 | ELECTRICAL INSULATING OR ELECTRICITY DISCHARGING |
| | 244 | PORTABLE RECEPTACLE WITH HOOD OR CLOSURE |
| | 247 | FILTRATE SPLASH PLATE AND/OR DEFLECTOR |
| | 248 | WITH DRIP, OVERFLOW OR CONTENT DRAINING FEATURE |
| | 249 | BRACKET OR LEG SUPPORT FOR STATIC SEPARATOR ASSEMBLY |
| | 251 | COMBINED |
| | 252 | SERIALLY CONNECTED DISTINCT TREATING WITH OR WITHOUT STORAGE UNITS |
| | 253 | Parallel |
| | 254 | With by-pass |
| | 255 | Cascade |
| | 256 | One unit inside another |
| | 257.1 | With storage unit |
| | 258 | With pump, gas pressure or vacuum source |
| | 259 | Diverse |
| | 263 | PARTICULATE MATERIAL TYPE SEPARATOR, E.G., ION EXCHANGE OR SAND BED |
| | 264 | Selective units or compartments |
| | 265 | With gravitational separator |
| | 266 | With spaced non-particulate separating means |
| | 267 | Trunnion mounted casing |
| | 268 | Gravity flow of particles type |
| | 269 | With rehabilitation means |
| | 270 | Movable means for particle pickup and redeposit |
| | 271 | Surface traversing type |
| | 274 | Including means to apply gas to bed |
| | 275 | Backwash or blowback means |
| | 276 | With mechanical agitator or residue remover |
| | 277 | Flow controller external of closed casing |
| | 279 | With embedded fluid distributor |
| | 280 | With agitator |
| | 281 | With access opening to normally closed casing |
| | 282 | Removable cartridge or hand-manipulated container |
| | 283 | Pervious divider between and contacting beds |
| | 284 | Spaced beds |
| | 285 | Embedded baffle |
| | 287 | Within flow line or flow line connected closed casing |
| | 288 | Conduit through bed, inlet and outlet at same end of casing |
| | 289 | With particular liquid receiving means or foraminous bed retainer |
| | 290 | With multi-layer beds |
| | 291 | Particular liquid receiving means or foraminous bed retainer |
| | 294 | DIVERSE DISTINCT SEPARATORS |
| | 295 | Including a filter |
| | 296 | Including liquid as a separating medium |
| | 297 | Moving filter medium |
| | 298 | With mechanical residue or sediment mover |
| | 299 | Including constituent trapping feature |
| | 300 | Alternate filters and traps in series |
| | 302 | Flow-line valve upstream of separator |
| | 303 | Cut-off sediment trap |
| | 304 | Tangential flow, spiral or convolute baffle |
| | 305 | Baffle preceding or within sediment trap |
| | 307 | Downstream of filter medium |
| | 308 | Directly communicating with tubular filter interior |
| | 310 | Lateral trap |
| | 311 | Downflow inlet, upflow through filter medium |
| | 312 | Sediment discharge means |
| | 314 | Spaced filters |
| | 319 | With agitator |
| | 320 | With baffle perpendicular to flow direction |
| | 321.6 | CASING DIVIDED BY MEMBRANE INTO SECTIONS HAVING INLET(S) AND/OR OUTLET(S) |
| | 321.61 | Membrane secured with adhesive of specified composition |
| | 321.62 | Antithrombogenic membrane |
| | 321.63 | Rotating mechanical agitator adjacent membrane |
| | 321.64 | Plural diverse structured membranes within a single casing |
| | 321.65 | Permeated liquid quantity measurement or control |
| | 321.66 | Energy recovery from treated liquid |
| | 321.67 | Membrane movement during purification |
| | 321.69 | With membrane cleaning or sterlizing means (other than by filter movement or rotating agitator) |
