US Patent Class 210
LIQUID PURIFICATION OR SEPARATION-- Main Headings




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Current as of: June, 1999
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CLASS NOTES
600  DF  PROCESSES {14}
85  DF  WITH ALARM, INDICATOR, REGISTER, RECORDER, SIGNAL OR INSPECTION MEANS {7}
96.1  DF  CONSTITUENT MIXTURE VARIATION RESPONSIVE {1}
97  DF  FLOW, FLUID PRESSURE OR MATERIAL LEVEL, RESPONSIVE {14}
138  DF  WITH TIME CONTROL {1}
141  DF  WITH PROGRAM ACTUATOR {1}
143  DF  AUTOMATIC CONTROL {4}
150  DF  WITH GAS-LIQUID SURFACE CONTACT MEANS {1}
153  DF  STRUCTURAL INSTALLATION {6}
173  DF  COMMINUTING {1}
175  DF  WITH HEATER OR HEAT EXCHANGER {8}
188  DF  WITH GAS SEPARATOR
189  DF  PLURAL CHAMBERS WITH MOVEMENT OF GRANULES THEREBETWEEN
190  DF  WITH EXTERNAL SUPPLY MEANS FOR REGENERATING MEDIUM, E.G., WATER SOFTENING SYSTEM {1}
192  DF  WITH PRELIMINARY CHEMICAL MANUFACTURE
193  DF  WITH PRECOAT ADDING OR APPLYING MEANS
194  DF  RECIRCULATION {3}
198.1  DF  WITH MEANS TO ADD TREATING MATERIAL {5}
222  DF  MAGNETIC {1}
224  DF  SECTIONAL CHAMBER PRESS TYPE {5}
232  DF  WITH REPAIR OR ASSEMBLING MEANS {5}
239  DF  CONVERTIBLE {1}
241  DF  WITH MOVABLE SUPPORT {1}
243  DF  ELECTRICAL INSULATING OR ELECTRICITY DISCHARGING
244  DF  PORTABLE RECEPTACLE WITH HOOD OR CLOSURE {2}
247  DF  FILTRATE SPLASH PLATE AND/OR DEFLECTOR
248  DF  WITH DRIP, OVERFLOW OR CONTENT DRAINING FEATURE
249  DF  BRACKET OR LEG SUPPORT FOR STATIC SEPARATOR ASSEMBLY {1}
251  DF  COMBINED
252  DF  SERIALLY CONNECTED DISTINCT TREATING WITH OR WITHOUT STORAGE UNITS {7}
263  DF  PARTICULATE MATERIAL TYPE SEPARATOR, E.G., ION EXCHANGE OR SAND BED {13}
294  DF  DIVERSE DISTINCT SEPARATORS {3}
321.6  DF  CASING DIVIDED BY MEMBRANE INTO SECTIONS HAVING INLET(S) AND/OR OUTLET(S) {15}
322  DF  PLURAL DISTINCT SEPARATORS {1}
348  DF  FILTER {25}
511  DF  LIQUID AS SEPARATING MEDIUM
512.1  DF  TANGENTIAL FLOW OR CENTRIFUGAL FLUID ACTION {2}
513  DF  GRAVITATIONAL SEPARATOR {6}
541  DF  ADJUNCTS
542  DF  MISCELLANEOUS
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CROSS-REFERENCE ART COLLECTIONS
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900  DF  ULTRA PURE WATER (E.G., CONDUCTIVITY WATER)
901  DF  SPECIFIED LAND FILL FEATURE (E.G., PREVENTION OF GROUND WATER FOULING)
902  DF  MATERIALS REMOVED {7}
918  DF  MISCELLANEOUS SPECIFIC TECHNIQUES {5}
928  DF  PAPER MILL WASTE (E.G., WHITE WATER, BLACK LIQUOR, ETC.) TREATED
929  DF  HEMOULTRAFILTRATE VOLUME MEASUREMENT OR CONTROL PROCESSES
930  DF  PAINT DETACKIFYING
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DIGESTS
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DIG 3  DF  Belt alignment
DIG 5  DF  Coalescer
DIG 6  DF  Dehydrators
DIG 7  DF  Drier blocks
DIG 8  DF  Fat fryer
DIG 9  DF  Floating cover
DIG 13  DF  Part flow-full flow
DIG 17  DF  Twist-on