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| Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
| You are viewing a USPC Schedule. |
| Class 429 | CHEMISTRY: ELECTRICAL CURRENT PRODUCING APPARATUS, PRODUCT, AND PROCESS |
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![]() | ![]() | 1 | HAVING POLARITY SAFETY FEATURE |
![]() | ![]() | 2 | HAVING LIVING MATTER, E.G., MICROORGANISM, ETC. |
![]() | ![]() | 3 | HAVING PULSE FEATURE |
![]() | ![]() | 4 | WITH SONIC OR ULTRASONIC FEATURE |
![]() | ![]() | 5 | RADIO ACTIVE MATERIAL CONTAINING |
![]() | ![]() | 6 | WITH PRESSURE EQUALIZING MEANS FOR LIQUID IMMERSION OPERATION |
![]() | ![]() | 7 | WITH NONBATTERY ELECTRICAL COMPONENT ELECTRICALLY CONNECTED WITHIN CELL CASING OTHER THAN TESTING OR INDICATING COMPONENTS |
![]() | ![]() | 8 | HAVING DISPARATE NONELECTRICAL FUNCTION |
![]() | ![]() | 9 | HAVING DIVERSE CELLS OR DIVERSE REMOVABLE CELLS IN A SUPPORT MEANS |
![]() | ![]() | 10 | HAVING MAGNETIC FIELD FEATURE |
![]() | ![]() | 11 | CURRENT PRODUCTION DEPENDENT UPON TEMPERATURE DIFFERENTIAL BETWEEN A PAIR OF ELECTRODES |
![]() | ![]() | 400 | FUEL CELL, SUBCOMBINATION THEREOF, OR METHOD OF MAKING OR OPERATING |
![]() | ![]() | 401 | Biochemical fuel cell |
![]() | ![]() | 402 | Metal-gas cell |
![]() | ![]() | 408 | Process or means for producing, recycling, or treating reactant, feedstock, product, or electrolyte |
![]() | ![]() | 409 | Treatment of the electrolyte |
![]() | ![]() | 410 | Purification |
![]() | ![]() | 413 | Humidification or dehumidification |
![]() | ![]() | 415 | Recycling unconsumed reactant |
![]() | ![]() | 416 | Producing reactant |
![]() | ![]() | 417 | Regenerating reactant from a reaction product |
![]() | ![]() | 420 | Including water gas shift reaction |
![]() | ![]() | 421 | From metal, alloy, or metal-containing material |
![]() | ![]() | 422 | By electrochemical means |
![]() | ![]() | 423 | Reforming process |
![]() | ![]() | 426 | Gasification of solid fuel |
![]() | ![]() | 427 | Characterized by control or measuring means or method |
![]() | ![]() | 428 | Process or means for control of operation |
![]() | ![]() | 429 | During startup or shutdown |
![]() | ![]() | 430 | Including measurement of electrical output |
![]() | ![]() | 433 | Arrangement or process including thermal control |
![]() | ![]() | 434 | Including heat exchange means |
![]() | ![]() | 435 | Plural heat exchangers |
![]() | ![]() | 436 | Heat exchange means external to fuel cell |
![]() | ![]() | 437 | Liquid cooling |
![]() | ![]() | 439 | Gas cooling |
![]() | ![]() | 440 | Including use of waste heat from fuel cell or afterburner |
![]() | ![]() | 441 | Heating by combustion |
![]() | ![]() | 442 | Including temperature |
![]() | ![]() | 443 | Arrangement or process for reactant control (e.g., pressure or concentration, etc.) |
![]() | ![]() | 450 | Control of electrolyte or water |
![]() | ![]() | 452 | Grouping of fuel cells into stack or module |
![]() | ![]() | 453 | With means for reducing ionic short circuit |
![]() | ![]() | 454 | With electrolyte or reactant supply or circulation |
![]() | ![]() | 463 | Comprising framed electrodes or frame-like gaskets |
![]() | ![]() | 464 | With molten electrolyte |
![]() | ![]() | 465 | With solid electrolyte |
![]() | ![]() | 467 | With means for stacking cells together |
![]() | ![]() | 468 | Specified material or component between adjacent cells |
![]() | ![]() | 469 | With sealing or supporting feature |
![]() | ![]() | 470 | With securing means |
![]() | ![]() | 471 | Comprising a plurality of stacks (e.g., modular assembly, etc.) |
![]() | ![]() | 472 | Fuel cell with molten electrolyte |
![]() | ![]() | 473 | With means for preventing or reducing electrode dissolution |
![]() | ![]() | 474 | With gas diffusion electrode |
![]() | ![]() | 476 | With liquid or solid reactant or reactant in electrolyte |
![]() | ![]() | 477 | Specified electrolyte material |
![]() | ![]() | 479 | Fuel cell with solid electrolyte |
![]() | ![]() | 480 | With gas diffusion electrode |
![]() | ![]() | 482 | Specified electrode/electrolyte combination |
![]() | ![]() | 484 | Specified electrode material |
![]() | ![]() | 490 | Gaseous or vaporized reactant |
![]() | ![]() | 491 | Specified solid electrolyte |
![]() | ![]() | 497 | Tubular-shaped solid electrolyte |
![]() | ![]() | 498 | Fuel cell with liquid electrolyte |
![]() | ![]() | 502 | Fuel cell with specified reactant |
![]() | ![]() | 503 | Particulate reactant (e.g., suspension, dispersion, etc.) |
![]() | ![]() | 504 | Reactant contains a nitrogen compound (e.g., hydrazine, ammonia, etc.) |
![]() | ![]() | 505 | Reactant includes carbon, oxygen, or hydrogen |
![]() | ![]() | 507 | Means for joining components together |
![]() | ![]() | 512 | Means for distributing, storing, or preventing fluid movement |
![]() | ![]() | 513 | Having means for supplying reactant or electrolyte |
![]() | ![]() | 515 | Having means for storing reactant (e.g., tank, reservoir, etc.) |
![]() | ![]() | 516 | Immobilizing structure or material (e.g., matrix, diaphragm, or membrane, etc.) |
![]() | ![]() | 517 | Electrical current collector |
![]() | ![]() | 523 | Electrode structure or composition |
![]() | ![]() | 524 | Including platinum catalyst |
![]() | ![]() | 525 | Including palladium catalyst |
![]() | ![]() | 526 | Including rhodium, ruthenium, or osmium catalyst |
![]() | ![]() | 527 | Including nickel, iron, or cobalt catalyst |
![]() | ![]() | 528 | Including metal oxide catalyst |
![]() | ![]() | 529 | Having electrolyte matrix or barrier layer |
![]() | ![]() | 530 | Having organic component |
![]() | ![]() | 532 | Having an inorganic matrix, substrate, or support |
![]() | ![]() | 535 | Method of making a fuel cell, fuel cell stack, or subcombination thereof |
![]() | ![]() | 47 | HAVING EARTH FEATURE |
![]() | ![]() | 48 | PRESERVING CELL IN STORAGE FEATURE |
![]() | ![]() | 49 | REGENERATING, SALVAGE OR REPAIR FEATURE OTHER THAN ONLY ADDITION OF ELECTROLYTE TO CELL OR ELECTRICALLY CHARGING PER SE |
![]() | ![]() | 50 | PROCESS OF CELL OPERATION |
![]() | ![]() | 53 | MEANS EXTERNALLY RELEASING INTERNAL GAS PRESSURE FROM CLOSED CELL, I.E., VALVE ETC. |
![]() | ![]() | 57 | SEALED CELL HAVING GAS PREVENTION OR ELIMATION MEANS |
![]() | ![]() | 58 | Prevention means controlling an auxiliary device |
![]() | ![]() | 59 | Prevention or elimination means is one of the cell electrodes or is electrically connected to an electrode |
![]() | ![]() | 61 | WITH CONTROL MEANS RESPONSIVE TO BATTERY CONDITION SENSING MEANS |
![]() | ![]() | 65 | TERMINAL PROTECTOR OTHER THAN SEAL THROUGH CASING |
![]() | ![]() | 66 | HAVING MEANS TO ACCOMMODATE ELECTRODE EXPANSION |
![]() | ![]() | 67 | HAVING MOVABLE MECHANICAL MEANS TO PROVIDE RELATIVE MOTION BETWEEN ELECTRODE AND ELECTROLYTE |
![]() | ![]() | 71 | WITH SYSTEM HAVING MEANS TO MOVE VENTILATING FLUID |
![]() | ![]() | 72 | HAVING SPECIFIED VENTING, FEEDING OR CIRCULATION STRUCTURE (OTHER THAN FEEDING OR FILLING FOR ACTIVATING DEFERRED ACTION-TYPE BATTERY) |
![]() | ![]() | 73 | Single filling opening and means to equalize fluid level in plural cells |
![]() | ![]() | 74 | Having means to control electrolyte level when liquid is added, other than a visual reference point |
![]() | ![]() | 80 | Having (manual) electrolyte storage feeding a device |
![]() | ![]() | 81 | Having nonmovable means providing motion between electrolyte and electrodes, i.e., circulation |
![]() | ![]() | 82 | Venting structure |
![]() | ![]() | 90 | WITH MEASURING, TESTING, OR INDICATING MEANS |
![]() | ![]() | 94 | PLURAL CONCENTRIC OR SINGLE COILED ELECTRODE |
![]() | ![]() | 95 | HAVING MEANS FOR DRAINING OR REMOVING ELECTROLYTE FROM A CELL OTHER THAN FILLER OPENING |
![]() | ![]() | 96 | CELL SUPPORT FOR REMOVABLE CELL |
![]() | ![]() | 97 | Having switch or interlock means |
![]() | ![]() | 98 | Having disparate support structure, e.g., eyeglass temple, etc. |
![]() | ![]() | 99 | For plural cells |
![]() | ![]() | 100 | Support or holder per se |
![]() | ![]() | 101 | FLUID ACTIVE MATERIAL OR TWO-FLUID ELECTROLYTE COMBINATION HAVING AREAS OF NONMIXTURE |
![]() | ![]() | 110 | DEFERRED ACTION TYPE |
![]() | ![]() | 111 | Responsive to light |
![]() | ![]() | 112 | Responsive to heat |
![]() | ![]() | 113 | Responsive to movement of electrode on contained electrolyte |
![]() | ![]() | 114 | Activated by spin or set back |
![]() | ![]() | 115 | Activated by explosive charge |
![]() | ![]() | 116 | Frangible separation means |
![]() | ![]() | 117 | By orientation of the cell |
![]() | ![]() | 118 | Responsive to addition of liquid |
![]() | ![]() | 120 | WITH HEAT EXCHANGE FEATURE |
![]() | ![]() | 121 | ADJUNCTS IN COMBINATION WITH OR FOR CONNECTION TO AN EXTERNAL ELECTRICAL ELECTRIC CURRENT CARRYING MEMBER OF A BATTERY OTHER THAN TERMINAL PROTECTORS, E.G., TERMINAL ADAPTER, CAPS, LIFTERS, ETC. AND CONNECTORS PER SE |
![]() | ![]() | 122 | CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS |
![]() | ![]() | 123 | Having means to interchangeably connect plural individual cells or means to conectively support cell to current seeking apparatus |
![]() | ![]() | 124 | Printed cell type |
![]() | ![]() | 125 | Standard cell or counter emf type |
![]() | ![]() | 126 | Cell with protective layer on electrolyte |
![]() | ![]() | 127 | Tape or flexible-type cell including tape fuel cells or subcombination thereof |
![]() | ![]() | 128 | Electrode or plural tablets, pellets or discs |
![]() | ![]() | 129 | Separator, retainer or spacer insulating structure (other than a single porous flat sheet, or either an impregnated or coated sheet not having distinct layers) |
![]() | ![]() | 130 | Insulator structure is only spacer of the rod, button, strip, or frame type |
![]() | ![]() | 131 | Having electrode enclosing feature |
![]() | ![]() | 132 | Separating material in bulk form about electrode |
![]() | ![]() | 133 | Cylindrical unit cell type, flat unit cell type or porous cup type |
![]() | ![]() | 136 | Envelope type |
![]() | ![]() | 140 | Tubular type |
![]() | ![]() | 142 | Having plural distinct components |
![]() | ![]() | 146 | Having electrode spacing projections |
![]() | ![]() | 148 | Plural housing having spacing means or channels for air circulation and short prevention |
![]() | ![]() | 149 | Plural cells |
![]() | ![]() | 150 | With integral switch means |
![]() | ![]() | 151 | Casing having interlocking structure |
![]() | ![]() | 152 | Individual cells connected in repeating contiguous layered units |
![]() | ![]() | 156 | Complete cells |
![]() | ![]() | 160 | Having intercell connector |
![]() | ![]() | 161 | Intracell assembly having cell electrode connector |
![]() | ![]() | 162 | Flat-type unit cell and specific unit cell components |
![]() | ![]() | 163 | Cell enclosure structure, e.g., housing, casing, container, cover, etc. |
![]() | ![]() | 164 | Cylindrical unit cell type, e.g., cup container electrode, tubular electrode, casing, etc. |
![]() | ![]() | 165 | Having centrally located anode, i.e., "inside-out" type cell |
![]() | ![]() | 166 | Reactive metallic can, cup or tubular electrode |
![]() | ![]() | 167 | Having outer nonreactive housing, casing, or jacket |
![]() | ![]() | 168 | Having metallic or conductive outer casing |
![]() | ![]() | 170 | Electrical contact terminal plate or cap clamped to or embedded in a portion of the housing |
![]() | ![]() | 171 | Having seal |
![]() | ![]() | 174 | Having seal material |
![]() | ![]() | 175 | Cover only |
![]() | ![]() | 176 | Container only |
![]() | ![]() | 177 | Housing or casing with plural covers |
![]() | ![]() | 178 | Having terminal |
![]() | ![]() | 179 | On or through a side of housing |
![]() | ![]() | 180 | Sealing sleeve embedded or molded in cover |
![]() | ![]() | 181 | And terminal seal |
![]() | ![]() | 185 | Having seal feature |
![]() | ![]() | 186 | Having cell assembly support feature |
![]() | ![]() | 187 | Having handle or lifting device |
![]() | ![]() | 188 | Include electrolyte chemically specified and method |
![]() | ![]() | 189 | Precursor composition |
![]() | ![]() | 300 | The electrolyte is gelled |
![]() | ![]() | 301 | Carbohydrate or derivative containing (e.g., starch, cellulose, etc.) |
![]() | ![]() | 302 | Silicon containing |
![]() | ![]() | 303 | Organic polymer containing |
![]() | ![]() | 304 | The electrolyte is solid |
![]() | ![]() | 305 | Temperature range of electrolyte operation or electrolyte processing is specified |
![]() | ![]() | 306 | Organic component containing |
![]() | ![]() | 307 | Chemically specified organic solute |
![]() | ![]() | 308 | Carbohydrate or derivative |
![]() | ![]() | 309 | Two or more polymers (i.e., polymer mixture) |
![]() | ![]() | 310 | Hetero ring containing polymer |
![]() | ![]() | 313 | Silicon containing polymer |
![]() | ![]() | 314 | Sulfur, nitrogen, or phosphorus containing polymer |
![]() | ![]() | 316 | Halogen containing polymer |
![]() | ![]() | 317 | Oxygen containing polymer |
![]() | ![]() | 318 | Silver containing component |
![]() | ![]() | 319 | Aluminum containing component (e.g., LiAlCl4, etc.) |
![]() | ![]() | 321 | Alkali metal containing component |
![]() | ![]() | 324 | Chemically specified organic solvent containing |
![]() | ![]() | 325 | And chemically specified inorganic solvent |
![]() | ![]() | 326 | Plural organic solvents (i.e., solvent mixture) |
![]() | ![]() | 327 | One of the organic solvents contains a hetero ring |
![]() | ![]() | 328 | Nitrogen is ring member of the hetero ring |
![]() | ![]() | 329 | Oxygen is ring member of the hetero ring |
![]() | ![]() | 336 | Hetero ring in the organic solvent |
![]() | ![]() | 337 | Oxygen is the only ring hetero atom in the hetero ring (e.g., dioxolane, gamma butyrolactone, etc.) |
![]() | ![]() | 339 | Nitrogen containing organic solvent compound (e.g., acetonitrile, etc.) |
![]() | ![]() | 340 | Sulfur containing organic solvent compound |
![]() | ![]() | 341 | Oxygen containing organic solvent compound |
![]() | ![]() | 344 | Chemically specified inorganic solvent other than water |
![]() | ![]() | 347 | Organic solute component in aqueous electrolyte |
![]() | ![]() | 199 | Halogen containing |
![]() | ![]() | 202 | Chromium containing |
![]() | ![]() | 203 | With acid containing N or P constituent |
![]() | ![]() | 204 | Sulphuric acid |
![]() | ![]() | 206 | Alkaline |
![]() | ![]() | 208 | Electrode support for suspending or holding an electrode in a battery |
![]() | ![]() | 209 | Electrode |
![]() | ![]() | 210 | Bipolar type |
![]() | ![]() | 211 | Having connector tab |
![]() | ![]() | 212 | Having active material with organic component |
![]() | ![]() | 213 | Organic component is active material |
![]() | ![]() | 214 | Organic component is an antioxidant |
![]() | ![]() | 215 | Organic component is an expander or addition agent for improving electrode capacity or plating characteristics |
![]() | ![]() | 217 | Organic component is a binder |
![]() | ![]() | 218.1 | Chemically specified inorganic electrochemically active material containing |
![]() | ![]() | 218.2 | Hydrogen storage material is active material |
![]() | ![]() | 219 | Silver component is active material |
![]() | ![]() | 220 | Copper component is active material |
![]() | ![]() | 221 | Iron component is active material |
![]() | ![]() | 222 | Cadmium component is active material |
![]() | ![]() | 223 | Nickel component is active material |
![]() | ![]() | 224 | Manganese component is active material |
![]() | ![]() | 225 | Lead component is active material |
![]() | ![]() | 229 | Zinc component |
![]() | ![]() | 231.1 | Alkalated transition metal chalcogenide component is active material |
![]() | ![]() | 231.4 | Alkalated carbon, graphite, or carbonaceous component is active material |
![]() | ![]() | 231.5 | Vanadium (V), chromium (Cr), niobium (Nb), molybdenum (Mo), titanium (Ti), or tungsten (W) component is active material |
![]() | ![]() | 231.6 | Alkaline earth metal or magnesium (Mg) component is active material |
![]() | ![]() | 231.7 | Halogenated carbon, graphite, or carbonaceous component is active material |
![]() | ![]() | 231.8 | Carbon, graphite, or carbonaceous component is active material |
![]() | ![]() | 231.9 | Alkali metal component is active material |
![]() | ![]() | 232 | Having inorganic binder or conductive filler |
![]() | ![]() | 233 | Grid or holder for active material |
![]() | ![]() | 234 | Grid or holder has nonconducting component portion thereof |
![]() | ![]() | 235 | Having particulate or fibrous porous mass including a sintered mass |
![]() | ![]() | 238 | Having longitudinal electrically conducting tubes or cores |
![]() | ![]() | 239 | Having conductive receptacle or mechanical locking means for the active material |
![]() | ![]() | 241 | Open mesh or perforated plate |
![]() | ![]() | 242 | Expanded metal |
![]() | ![]() | 243 | Having members in a face plane of the grid being offset from members in the plane of the opposite face |
![]() | ![]() | 245 | Materials chemically specified |
![]() | ![]() | 246 | With insulating separator, spacer or retainer means |
![]() | ![]() | 247 | Separator, retainer, spacer or materials for use therewith |
| CROSS-REFERENCE ART COLLECTIONS | ||
![]() | ![]() | 900 | FUEL CELL INCLUDING MEANS FOR POWER CONDITIONING (E.G., CONVERSION TO AC, ETC.) |
![]() | ![]() | 901 | FUEL CELL INCLUDING MEANS FOR UTILIZATION OF HEAT FOR UNRELATED APPLICATION (E.G., HEATING A BUILDING, ETC.) |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
| Any foreign patents or non-patent literature from subclasses that have been reclassified have been transferred directly to FOR Collections listed below. These Collections contain ONLY foreign patents or non-patent literature. The parenthetical references in the Collection titles refer to the abolished subclasses from which these Collections were derived. | ||
| CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS |
| CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS (429/122) |
Include electrolyte chemically specified and method (429/188) |
| FOR100 | Gelled (429/190) |
| FOR101 | Solid (429/191) |
| FOR104 | Nonaqueous solvent (429/194) |
| FOR105 | With water (429/195) |
| FOR106 | Inorganic solvent (429/196) |
| FOR107 | Plural nonaqueous system (429/197) |
| FOR108 | Having organic solute component (429/198) |
Electrode |
Electrode (429/209) |
| FOR110 | FUEL CELL, SUBCOMBINATION THEREOF OR METHODS OF OPERATING (429/12) |
| FOR111 | Process of operating (429/13) |
| FOR112 | Circulating or feeding electrolyte (429/14) |
| FOR114 | Fused or molten electrolyte (429/16) |
| FOR115 | Generating, regenerating or recycling reactant (429/17) |
| FOR116 | Plural cells having means to reduce ionic short circuit (429/18) |
| FOR117 | Having means for active material generation or regeneration (429/19) |
| FOR120 | Automatic control means (429/22) |
| FOR121 | Electrical output dependent (429/23) |
| FOR122 | Temperature dependent (429/24) |
| FOR123 | Pressure dependent (429/25) |
| FOR124 | Having heat exchange means (429/26) |
| FOR125 | Active material electrode-type cell or subcombination thereof (429/27) |
| FOR126 | Envelope cathode-type or subcombination thereof (429/28) |
| FOR127 | And chemically specified electrolyte material (429/29) |
| FOR128 | Solid electrolyte (429/30) |
| FOR129 | Tubular (429/31) |
| FOR130 | Plural disc or modules (429/32) |
| FOR131 | Electrolyte composition chemically specified (429/33) |
| FOR132 | Housing member, seal, spacer or fluid distributing or directing means (429/34) |
| FOR138 | Catalytic electrode structure or composition (429/40) |
| FOR139 | Having electrolyte matrix or barrier layer (429/41) |
| FOR140 | Having organic constituent as part of the electrode (429/42) |
| FOR142 | Having an inorganic matrix, substrate or support (429/44) |
| FOR144 | Chemically specified electrolyte (429/46) |
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