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![[Search a list of Patent Appplications for class 252]](../as.gif) Class 252 | COMPOSITIONS |
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![[List of Patents for class 252 subclass 1]](../ps.gif) | 1 | MISCELLANEOUS (E.G., ARTIFICIAL SNOW) |
| | 2 | FIRE-EXTINGUISHING |
| | 3 |  Foam or gas phase containing |
| | 4 | Gas generative, chemically |
| | 5 |  Dry, combustion type |
| | 6 | Low temperature chemically interreactive |
| | 7 | Carbonates or ammonium salts containing or pyrolytic |
| | 8 | Volatile or gas charged liquids containing |
| | 8.05 | Foam-stabilizant or colloid-stabilizant containing |
| | 601 | FIRE RETARDING |
| | 602 | Having disparate function |
| | 603 | For living matter |
| | 604 | Material physically quantified |
| | 605 | Containing gas |
| | 606 | Intumescent |
| | 607 | For wood or cellulosic material other than textile |
| | 608 | For textile (i.e., woven material) |
| | 609 | For solid synthetic polymer and reactants thereof |
| | 610 | Dispersion or colloidal system |
| | 611 | For dispersion or colloidal system |
| Class 507 is an integral part of this Class (Class 252), as shown by the position of this box, and follows the schedule hierarchy of this Class, retaining all pertinent definitions and Class lines of this class. | ||
| | 8.57 | LEATHER OR FUR TREATING (OTHER THAN CLEANING COMPOSITIONS OR AUXILIARY COMPOSITIONS FOR CLEANING) |
| | 8.61 | DURABLE FINISHES FOR TEXTILE MATERIALS, OR PROCESSES OF PREPARING (E.G., CREASE RESISTANT, MOISTURE ABSORBENT, ANTISTATIC, ETC., FINISHES) |
| | 8.81 | TEXTILE PROCESSING AID COMPOSITIONS, OR PROCESSES OF PREPARING (E.G., LUBRICANTS OR ANTISTATIC AGENTS FOR FIBER, YARN, FABRIC, ETC.) |
| | 8.82 | For tire cord yarn, elastomeric filaments, or biologically innocuous or absorbable fibers (e.g., SPANDEX™, textiles used in food packaging, absorbable surgical sutures, etc.) |
| | 8.83 | Sizing agents (e.g., for weaving yarn, etc.) |
| | 8.85 | For textile materials consisting wholly or in part of animal hair fibers (e.g., wool, etc.) |
| | 8.91 | 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 | VAPORIZATION, OR EXPANSION, REFRIGERATION OR HEAT OR ENERGY EXCHANGE |
| | 68 | With lubricants, or warning, stabilizing or anti-corrosion agents or persistent gases |
| | 69 | With low-volatile solvent or absorbent |
| Class 508 is an integral part of this Class (Class 252), as shown by the position of this box, and follows the schedule hierarchy of this Class, retaining all pertinent definitions and Class lines of this class. | ||
| | 60 | PHYSICAL SEPARATION AGENTS |
| | 62 | HEAT OR SOUND INSULATING |
| | 62.2 | ELECTROLYTES FOR ELECTRICAL DEVICES (E.G., RECTIFIER, CONDENSER) |
| | 62.3R | BARRIER LAYER DEVICE COMPOSITIONS |
| | 62.3T | Thermoelectric |
| | 62.3Q | Organic |
| | 62.3E | Free element containing |
| | 62.3GA | Group III element containing binary compound; e.g., Ga, As |
| | 62.3ZB | Groups II and V elements containing binary compund; e.g., zinc, bismuth |
| | 62.3ZT | Groups II and VI elements containing binary compound; e.g., Zn, Te |
| | 62.3V | Group VI element-containing |
| | 62.3C | Binary alloy or carbide; e.g., Al, In, LiC |
| | 62.51R | MAGNETIC |
| | 62.52 | Flaw detection or magnetic clutch |
| | 62.53 | With wax, bitumen, resin, or gum |
| | 62.55 | Free metal or alloy containing |
| | 62.56 | Iron-oxygen compound containing |
| | 62.57 | With scandium, yttrium, gallium, rare earth, or actinide |
| | 62.58 | With boron, aluminum, thallium, or indium |
| | 62.59 | With titanium, zirconium, silicon, hafnium, germanium, or tin |
| | 62.6 | With Group I metal |
| | 62.62 | With Group II metal or lead |
| | 62.51C | Chromium or chromium compound containing |
| | 62.9R | PIEZOELECTRIC |
| | 567 | DEFINED LIQUID DIELECTRIC DISPERSED IN DEFINED WEB OR SHEET |
| | 570 | FLUENT DIELECTRIC |
| | 571 | Gaseous or gas-containing |
| | 572 | Metal- or insoluble component-containing; e.g., slurry, grease, etc. |
| | 573 | Si-containing |
| | 574 | B-, P-, S-, Se-, or Te-containing |
| | 575 | N-containing |
| | 578 | O-containing |
| | 581 | Halogenated polycyclic compound-containing |
| | 70 | FROST-PREVENTING, ICE-THAWING, THERMOSTATIC, THERMOPHORIC, OR CRYOGENIC |
| | 71 | HEAT-EXCHANGE, LOW-FREEZING OR POUR POINT, OR HIGH BOILING COMPOSITIONS |
| | 72 | With leak-stopping agents |
| | 73 | Organic components |
| | 79.1 | ETCHING OR BRIGHTENING COMPOSITIONS |
| | 88.1 | DUST SUPPRESSANTS FOR BULK MATERIALS, OR PROCESSES OF PREPARING (E.G., FOR CONSOLIDATING DUST IN COAL MINES, CONTROLLING SOIL EROSION, ETC.) |
| | 88.2 | 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.) |
| Class 510 is an integral part of this Class (Class 252), as shown by the position of this box, and follows the schedule hierarchy of this Class, retaining all pertinent definitions and Class lines of this class. | ||
| | 175 | WATER-SOFTENING OR PURIFYING OR SCALE-INHIBITING AGENTS |
| | 176 | Packages or heterogeneous arrangements |
| | 178 | Deoxidant or free-metal containing |
| | 179 | Water-insoluble base-exchange agent containing |
| | 180 | Plant or organic material containing |
| | 181.1 | GETTERS OR GAS OR VAPOR GENERATING MATERIALS FOR ELECTRIC LAMPS, ELECTRIC SPACE DISCHARGE DEVICES, AND SIMILAR DEVICES |
