US Patent Class 252
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Current as of: June, 1999
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CLASS NOTES
1  DF  MISCELLANEOUS (E.G., ARTIFICIAL SNOW)
2  DF  FIRE-EXTINGUISHING {4}
601  DF  FIRE RETARDING {9}
8.57  DF  LEATHER OR FUR TREATING (OTHER THAN CLEANING COMPOSITIONS OR AUXILIARY COMPOSITIONS FOR CLEANING)
8.61  DF  DURABLE FINISHES FOR TEXTILE MATERIALS, OR PROCESSES OF PREPARING (E.G., CREASE RESISTANT, MOISTURE ABSORBENT, ANTISTATIC, ETC., FINISHES) {2}
8.81  DF  TEXTILE PROCESSING AID COMPOSITIONS, OR PROCESSES OF PREPARING (E.G., LUBRICANTS OR ANTISTATIC AGENTS FOR FIBER, YARN, FABRIC, ETC.) {5}
8.91  DF  COMPOSITIONS FOR ENHANCING THE APPEARANCE OF CONSUMER TEXTILE GOODS (OTHER THAN CLEANING COMPOSITIONS OR AUXILIARY COMPOSITIONS FOR CLEANING), OR PROCESSES OF PREPARING (E.G., ANTISTATIC OR WRINKLE-REMOVING SPRAY FOR GARMENTS, ETC.)
67  DF  VAPORIZATION, OR EXPANSION, REFRIGERATION OR HEAT OR ENERGY EXCHANGE {2}
60  DF  PHYSICAL SEPARATION AGENTS {1}
62  DF  HEAT OR SOUND INSULATING
62.2  DF  ELECTROLYTES FOR ELECTRICAL DEVICES (E.G., RECTIFIER, CONDENSER)
62.3 R  DF  BARRIER LAYER DEVICE COMPOSITIONS {8}
62.51 R  DF  MAGNETIC {5}
62.9 R  DF  PIEZOELECTRIC {1}
567  DF  DEFINED LIQUID DIELECTRIC DISPERSED IN DEFINED WEB OR SHEET
570  DF  FLUENT DIELECTRIC {7}
70  DF  FROST-PREVENTING, ICE-THAWING, THERMOSTATIC, THERMOPHORIC, OR CRYOGENIC
71  DF  HEAT-EXCHANGE, LOW-FREEZING OR POUR POINT, OR HIGH BOILING COMPOSITIONS {2}
79.1  DF  ETCHING OR BRIGHTENING COMPOSITIONS {2}
88.1  DF  DUST SUPPRESSANTS FOR BULK MATERIALS, OR PROCESSES OF PREPARING (E.G., FOR CONSOLIDATING DUST IN COAL MINES, CONTROLLING SOIL EROSION, ETC.)
88.2  DF  COMPOSITIONS FOR COATING OR IMPREGNATING A SUBSTRATE USED FOR COLLECTING FINE PARTICLES BY ADHERENCE, OR PROCESSES OF PREPARING (E.G., FOR IMPREGNATING DUSTING CLOTHS, DUST FILTERS, ETC.)
175  DF  WATER-SOFTENING OR PURIFYING OR SCALE-INHIBITING AGENTS {4}
181.1  DF  GETTERS OR GAS OR VAPOR GENERATING MATERIALS FOR ELECTRIC LAMPS, ELECTRIC SPACE DISCHARGE DEVICES, AND SIMILAR DEVICES {4}
194  DF  HUMIDOSTATIC, WATER REMOVIVE, BINDIVE, OR EMISSIVE
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*CLASS 502, CATALYST, SOLID..*
*SORBENT OR SUPPORT THEREFOR,*
*PRODUCT OR PROCESS OF.......*
*MAKING. CLASS 502 IS TO BE..*
*CONSIDERED AS OCCUPYING.....*
*THIS POSITION IN THE CLASS..*
*252 SCHEDULE FOR PURPOSES...*
*OF CLASSIFICATION OF A......*
*COMPOSITION HAVING A .......*
*DISCLOSED OR CLAIMED........*
*FUNCTION OR PROPERTY........*
*PROVIDED FOR IN CLASS 252...*
*IN ADDITION TO A CATALYTIC..*
*OR SORPTURE USE. ...........*
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478  DF  X-RAY OR NEUTRON SHIELD
500  DF  ELECTRICALLY CONDUCTIVE OR EMISSIVE COMPOSITIONS {6}
492  DF  INCANDESCENT MANTLE COMPOSITIONS
299.01  DF  LIQUID CRYSTAL COMPOSITIONS {7}
582  DF  LIGHT TRANSMISSION MODIFYING COMPOSITIONS {6}
625  DF  RADIOACTIVE COMPOSITIONS {4}
301.16  DF  ORGANIC LUMINESCENT MATERIAL CONTAINING COMPOSITIONS {6}
301.36  DF  INORGANIC LUMINESCENT COMPOSITIONS WITH ORGANIC NONLUMINESCENT MATERIAL
301.4 R  DF  INORGANIC LUMINESCENT COMPOSITIONS {6}
700  DF  CHEMILUMINESCENT
182.1  DF  HAVING UTILITY AS A REACTIVE MATERIAL IN AN ELECTROCHEMICAL CELL; E.G., BATTERY, ETC.
184  DF  ABSORPTIVE, OR BINDIVE, AND CHEMICALLY YIELDIVE (E.G., ION EXCHANGER)
185  DF  PLUMBIFEROUS SULPHUR BINDANT OR MODIFIANT CONTAINING
186.1  DF  OXIDATIVE BLEACHANT, OXIDANT CONTAINING, OR GENERATIVE {9}
188.1  DF  REDUCTIVE BLEACHANT, DEOXIDANT, REDUCTANT, OR GENERATIVE {4}
189  DF  CO, S, NEGATIVE ELEMENT, OR ACID, BINDANT CONTAINING {3}
193  DF  AMMONIA, ALKALI OR BASE, BINDANT CONTAINING
363.5  DF  SOLIDS WITH SOLUTION OR DISPERSION AIDS
364  DF  SOLVENTS
365  DF  ANTI-INGESTIBLE OR DENATURED {1}
367.1  DF  SOAPS (I.E., ALKALI-METAL SALTS OF WATER-INSOLUBLE FATTY ACIDS OR OF ROSIN ACIDS)
372  DF  GASEOUS COMPOSITIONS {2}
378 R  DF  EXFOLIATED OR INTUMESCED {1}
380  DF  PRESERVATIVE AGENTS {3}
408.1  DF  NONREACTIVE ANALYTICAL, TESTING, OR INDICATING COMPOSITIONS
600  DF  RADIATION SENSITIVE
182.11  DF  COMPOSITIONS CONTAINING A SINGLE CHEMICAL REACTANT OR PLURAL NONINTERACTIVE CHEMICAL REACTANTS; I.E., NOT VIS-A-VIS {2}
183.11  DF  CHEMICALLY INTERACTIVE REACTANTS (VIS-A-VIS) {3}
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CROSS-REFERENCE ART COLLECTIONS
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950  DF  DOPING AGENT SOURCE MATERIAL {1}
960  DF  SURFACE FLAW DETECTING COMPOSITIONS
961  DF  STRESS OR CONTACT INDICATORS
962  DF  TEMPERATURE OR THERMAL HISTORY
963  DF  HUMIDITY OR MOISTURE INDICATORS
964  DF  LEAK DETECTION
965  DF  RETROSPECTIVE PRODUCT IDENTIFICATION (E.G., TAGS AND TRACERS, ETC.)
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FOREIGN ART COLLECTIONS
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FOR 100  DF  TEXTILE TREATING (252/8.6) {3}
FOR 113  DF  SWEEPING OR DUST OR PARTICLE ADHERENT (252/88)
FOR 247  DF  SOAPS (ALKALI-METAL SALTS OF WATER-INSOLUBLE FATTY OR ROSIN ACIDS) (252/367) {2}
*  DF  FOREIGN ART COLLECTIONS {1}
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DIGEST
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DIG 18  DF  Activation-platinum