| Class 204 | CHEMISTRY: ELECTRICAL AND WAVE ENERGY |
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| PROCESSES AND PRODUCTS |
| Class 205 is an integral part of this Class (Class 204), 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. | ||
![[List of Pre Grant Publications for class 204 subclass 155]](../as.gif) | ![[List of Patents for class 204 subclass 155]](../ps.gif) | 155 |  Electrical, or wave energy in magnetic field |
| | 157.15 | Processes of treating materials by wave energy |
| | 157.2 |  Isotope separation or enrichment |
| | 157.3 | Removing a component from normally gaseous mixture |
| | 157.4 | Process of preparing desired inorganic material |
| | 157.41 |  Using laser |
| | 157.42 | Using sonic or ultrasonic energy |
| | 157.43 | Using microwave energy |
| | 157.44 | Using ionizing radiation |
| | 157.45 | Boron, phosphorous or silicon containing product produced |
| | 157.46 | Nitrogen containing product produced |
| | 157.47 | Carbon containing product produced |
| | 157.48 | Halogen containing product produced |
| | 157.49 | Sulfur containing product produced |
| | 157.5 | Oxygen containing product produced |
| | 157.52 | Hydrogen containing product produced |
| | 157.6 | Process or preparing desired organic product containing at least one atom other than carbon and hydrogen |
| | 157.61 | Using laser |
| | 157.62 | Using sonic or ultrasonic energy |
| | 157.63 | Using ionizing radiation |
| | 157.64 |  Nitrogen, sulfur, phosphorous or silicon containing product produced |
| | 157.65 | Carbocyclic ring containing product produced |
| | 157.67 | Vitamin product produced |
| | 157.68 | Carbohydrate or protein product produced |
| | 157.69 | Heterocyclic product produced |
| | 157.73 | Phosphorous product produced |
| | 157.74 | Silicon product produced |
| | 157.75 | Heavy metal product produced |
| | 157.76 | Sulfur product produced |
| | 157.81 | Nitrogen product produced |
| | 157.82 | Oxygen containing |
| | 157.85 | Carbon triple bonded to nitrogen containing |
| | 157.86 | Halogen containing |
| | 157.87 | Carboxylic acid or derivative product produced |
| | 157.88 | Oxygen other than as part of a carboxylic acid or derivative moiety |
| | 157.89 | Atom other than carbon, hydrogen or oxygen |
| | 157.9 | Alcohol product produced |
| | 157.92 | Ether product produced |
| | 157.93 | Aldehyde or ketone product produced |
| | 157.94 | Halogen product produced |
| | 158.14 | At least one carbocyclic ring and only carbon and hydrogen atoms in product produced |
| | 158.2 | Processes of purifying materials |
| | 158.21 | Organic material purified |
| Note: See subclasses 900-914 for art collections pertaining to subclasses 157.15-157.21. | ||
| | 164 | Electrostatic field or electrical discharge |
| | 165 | Organic |
| | 173 | Carbon |
| | 174 | Sulfur-oxygen compounds |
| | 175 | Hydrogen peroxide |
| | 176 | Ozone |
| | 177 | Nitrogen compounds |
| | 450 | Electrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhere |
| | 451 | Capillary electrophoresis |
| | 452 | With detailed detection |
| | 453 | With injection |
| | 454 | With adjustment or alteration of electro-osmotic bulk flow |
| | 455 | Using gel-filled capillary |
| | 456 | Gel electrophoresis |
| | 457 | With programmed, cylic, or time responsive control |
| | 458 | Plural rapid changes in direction of electric field (at least 1,000 times total and at more than 1/sec) (e.g., pulsed field, etc.) |
| | 459 | Isoelectric focusing (i.e., using pH variation) |
| | 461 | With analysis or detailed detection |
| | 462 | With posttreatment of gel to purify or recover a desired component |
| | 465 | Preparation in unitary apparatus (e.g., preparative, etc.) |
| | 466 | Using slab gel |
| | 468 | Electrolyte composition |
| | 469 | Gel composition (other than simple agarose or polyacrylamide) |
| | 471 | Coating or forming of object |
| | 472 | With control responsive to sensed condition |
| | 475 | Rubber or vulcanizable gum used to coat or form |
| | 477 | Alternating current |
| | 478 | With irradiation or illumination (e.g., for curing, etc.) |
| | 479 | Coating interior of object |
| | 480 | With regeneration or replenishment of coating bath (e.g., ultrafiltration, ion exchange, measurement followed by addition of concentrated reagent, etc.) |
| | 483 | Forming of object |
| | 484 | Plural coating operations |
| | 489 | Using bath having designated chemical composition (DCC) |
| | 490 | Resultant coating is solely inorganic |
| | 492 | Anodic processes only |
| | 493 |  With heat treatment of coating |
| | 495 | With pretreatment of substrate or bath |
| | 496 | Bath contains shading or coloring agent (e.g., pigment, etc.) |
| | 497 | Bath contains surface active agent (e.g., soap or detergent, wetting or emulsifying agent, etc.) |
| | 498 | Bath contains carboxyl group |
| | 499 | Cathodic processes only |
| | 500 | With heat treatment of coating |
| | 502 | Bath contains epoxy or epoxide |
| | 506 | Bath contains separate crosslinking or curing agent |
| | 507 | With posttreatment of coating (e.g., heat treatment, washing, drying, etc.) |
| | 508 | Bath contains shading or coloring agent, metal oxide, free metal, or free carbon |
| | 509 | With heat treatment of coating |
| | 510 | With pretreatment of substrate (e.g., cleaning, wetting, etc.) |
| | 511 | Using liquid jet |
| | 512 | Continuous movement of substrate through bath |
| | 513 | Hydrocarbon oil separated or purified |
| | 515 | Inorganic siliceous or calcareous material prepared, separated, or treated (e.g., clay, earth, concrete, asbestos, glass, etc.) |
| | 518 | Barrier separation (e.g., using membrane, filter paper, etc.) |
| | 519 | With control responsive to sensed condition |
| | 520 | Ion selective |
| | 521 | Combined with manufacture or pretreatment of barrier |
| | 522 | Using both anion and cation selective membranes |
| | 523 | Alternating anion and cation selective membranes |
| | 524 |  And using ion exchange material (e.g., suspended particles, etc.) |
| | 525 | With prevention of scale buildup or fouling of membrane |
| | 526 | Gas or vapor treated |
| | 527 | Biological material prepared, recovered, or treated (e.g., urine, etc.) |
| | 528 | Regeneration of liquid electrolyte |
| | 529 | Metal or metal salt recovered or removed |
| | 530 | Organic material prepared, recovered, or treated |
| | 531 | Acid prepared, recovered, or treated |
| | 532 | And using nonion selective membrane |
| | 533 | And using ion exchange material (e.g., suspended particles, etc.) |
| | 534 | And using bipolar membrane |
| | 535 | And using nonion selective membrane |
| | 536 | And using ion exchange material (e.g., suspended particles, etc.) |
| | 537 | Using bipolar membrane |
| | 539 | Using anion selective membrane |
| | 540 | Biological material prepared, recovered, or treated (e.g., urine, etc.) |
| | 541 | Organic material prepared, recovered, or treated |
| | 542 | Combined with diverse-type separation (e.g., electro-osmotic barrier separation combined with centrifugal separation, etc.) |
| | 543 | Biological material prepared, recovered, or treated (e.g., urine, etc.) |
| | 544 | Organic material prepared, recovered, or treated |
| | 545 | With use of nonelectrical field or force to separate (e.g., magnetic, centrifugal, etc.) |
| | 546 | Absorbent strip electrophoresis (e.g., using cellulose acetate or paper strip, etc.) |
| | 547 | Dielectrophoresis (i.e., using nonuniform electric field) |
| | 548 | Isoelectric focusing (i.e., using pH variation) |
| | 549 | Isotachophoresis (i.e., displacement electrophoresis) or measurement of ion or particle mobility |
| | 550 | Ionophoresis |
| | 551 | Solid sorption or desorption |
| | 553 | Bulk separation of solids and liquids (e.g., dewatering solids, clarifying water, etc.) |
| | 554 | Electrical (including simultaneous electrical and magnetic) separation or purification of liquid or magnetic treatment of liquid (other than separation) |
| | 555 | With control responsive to sensed condition |
| | 556 | With measuring, testing, or sensing |
| | 557 | Using magnetic field |
| | 558 | With simultaneous use of liquid-liquid extraction solvent |
| | 559 | Predominantly hydrocarbon |
| | 571 | Removing solids |
| | 573 | Resolving emulsion or dispersion |
| | 192.1 | Coating, forming or etching by sputtering |
| | 192.11 | Ion beam sputter deposition |
| | 192.12 | Glow discharge sputter deposition (e.g., cathode sputtering, etc.) |
| | 192.13 | Measuring or testing (e.g., of operating parameters, property of article, etc.) |
| | 192.14 | Coating inorganic material onto polymeric material |
| | 192.15 | Specified deposition material or use |
| | 192.32 | Sputter etching |
| | 192.38 | Vacuum arc discharge coating |
| | 193 | APPARATUS |
| | 194 | Electrolytic |
| | 400 | Analysis and testing |
| | 401 | Fault testing of sensor or component |
| | 402 | Regeneration or activation |
| | 403.01 | Biological material (e.g., microbe, enzyme, antigen, etc.) analyzed, tested, or included in apparatus |
| | 403.02 | Disposable apparatus or apparatus having removable section (e.g., removable cartridge, etc.) |
| | 403.06 | With semipermeable membrane |
| | 403.07 | For blocking passage of macromolecules (molecular weight greater than or equal to 8,000) |
| | 403.1 | Enzyme included in apparatus |
| | 403.13 | And microelectrode (i.e., at least one electrode dimension is less than 500 microns) |
| | 403.14 | Enzyme included in apparatus |
| | 403.15 | Electrode containing free carbon |
| | 404 | Corrosion |
| | 405 | Titration |
| | 406 | With significant electrical circuitry or nominal computer device |
| | 407 | With significant display or analytical device |
| | 408 | With means for temperature or pressure compensation |
| | 409 | With means providing specified-flow condition or flow-path |
| | 412 | Three or more electrodes |
| | 413 | Liquid electrode, e.g., Hg, Na, etc. |
| | 414 | Gel electrolyte |
| | 415 | Selectively permeable membrane |
| | 416 | Ion-sensitive electrode |
| | 421 | Solid electrolyte |
| | 430 | Moisture absorbing electrolyte |
| | 431 | Gas sensing electrode |
| | 433 | Measuring carbon or pH |
| | 434 | Involving plating, coating or stripping |
| | 435 | Standard reference electrode |
| | 196.01 | Object protection |
| | 196.02 | With control means responsive to sensed condition |
| | 196.05 | With programmed, cyclic, or time responsive control means |
| | 196.06 | With measuring, testing, or sensing means |
| | 196.08 | With gas or vapor removing or treating means |
| | 196.09 | Plural cells used or protected |
| | 196.1 | Internal battery |
| | 196.11 | Resistor or impedance in series between anode and object |
| | 196.12 | With fluid filter |
| | 196.13 | With bypass means |
| | 196.14 | Anode moving relative to object |
| | 196.15 | With fluid inlet or outlet means used or protected |
| | 196.17 | Rigid anode with rigid support |
| | 196.2 | Flexible cable, chain, or wire anode or support |
| | 196.21 | Earth grounded object or protection means |
| | 196.22 | Copper and zinc electrically coupled or alloyed into one or more electrodes |
| | 196.23 | Anode contains aluminum |
| | 196.26 | Resistor or impedance in series between power supply and object |
| | 196.27 | Alternative energy supply (e.g., solar panel, thermoelectric or piezoelectric power supply, etc.) |
| | 196.28 | Rotating electrode |
| | 196.29 | Magnetic mounting means |
| | 196.3 | Rigid anode with rigid support |
| | 196.33 | Flexible cable, chain, or wire anode or support |
| | 196.36 | Earth grounded object or protection means |
| | 196.37 | Vessel protected (e.g., steam boiler, etc.) |
| | 196.38 | Anode contains precious metal or free carbon |
| With movable electrode means |
| | 198 | Work conveyer |
| | 206 | Continuous strip or filament electrode |
| | 212 | Rotary |
| | 219 | Liquid electrode |
| | 222 | Electrode oscillator, reciprocator or agitator |
| | 224R | Localized area applicators |
| | 225 | Electrode feeding or withdrawal means |
| | 227 | Cells with base treatment means |
| | 228.1 | With current, voltage, or power control means responsive to sensed condition |
| | 228.2 | Fluid level sensing means |
| | 228.3 | Fluid flow sensing means |
| | 228.4 | Fluid pressure sensing means |
| | 228.6 | Electrolyte property sensing means (e.g., temperature, concentration, pH, conductivity, etc.) |
| | 228.7 | Workpiece property sensing means (e.g., mass, coating thickness, etc.) |
| | 228.8 | Workpiece presence, position, or movement sensing means |
| | 228.9 | Having auxiliary electrode |
| | 229.2 | And programmed, cyclic, or time responsive control means |
| | 229.4 | With programmed, cyclic, or time responsive current, voltage, or power control means |
| | 229.5 | For controlling waveform supplied to working electrode |
| | 229.6 | For simultaneously reversing polarity of working and counter electrodes |
| | 229.7 | Having specified circuit details |
| | 229.8 | With means for measuring, testing, or sensing current, voltage, or power |
| | 230.2 | With current, voltage, or power control means |
| | 230.3 | Mechanical |
| | 230.4 | For inhibiting short circuits |
| | 230.5 | Switch or connector |
| | 230.6 | For controlling waveform |
| | 230.7 | Having auxiliary electrode |
| | 230.8 | Having specified circuit details |
| | 232 | Cells with electrolyte treatment means |
| | 242 | Cells |
| | 243.1 | Fused bath |
| | 244 | Plural cells |
| | 245 | With feeding and/or withdrawal means |
| | 247.1 | With magnetic field effect compensating means |
| | 247.2 | With means for cleaning electrode element |
| | 247.3 | Refractory hard material (RHM) containing electrode |
| | 247.4 | With cell lining or coating |
| | 248 | Internal battery |
| | 250 | Liquid electrode |
| | 252 | Diaphragm type |
| | 253 | Plural cells |
| | 259 | Basket-type electrode |
| | 260 | Concentrically arranged electrodes |
| | 261 | With agitator |
| | 262 | With heater or cooler |
| | 263 | With feeding and/or withdrawal means |
| | 267 | Plural cells |
| | 271 | Portable |
| | 272 | Concentrically arranged electrodes |
| | 273 | With agitator |
| | 274 | With heater or cooler |
| | 275.1 | With feeding and/or withdrawal means |
| [See the Search Notes for FOR Collections associated with this subclass or its indents (if there are indents).] | ||
| | 279 | Elements |
| | 280 | Electrodes |
| | 281 | Electroforming molds or strips plates |
| | 282 | With diaphragm |
| | 284 | Perforated or foraminous |
| | 286.1 | With electrode supporting means |
| [See the Search Notes for FOR Collections associated with this subclass or its indents (if there are indents).] | ||
| | 287 | Work container |
| | 288 | Electrodes with lateral extensions |
| | 288.1 | And dielectric gasket or spacer |
| | 288.2 | And additional electrical conductor of diverse material |
| | 288.3 | Including resilient means (e.g., spring, etc.) |
| | 288.4 | Including threaded connector |
| | 288.6 | Hook or loop |
| | 289 | With lateral extensions |
| | 290.01 | Laminated or coated (i.e., composite having two or more layers) |
| [See the Search Notes for FOR Collections associated with this subclass or its indents (if there are indents).] | ||
| | 290.02 | Actinide series element (i.e., Ac, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, or Lr) or compound containing |
| | 290.03 | Having three or more layers |
| | 290.04 | Rare earth metal (i.e., Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu) or compound containing |
| | 290.05 | Organic compound containing |
| | 290.06 |  And noble metal (i.e., Ru, Rh, Pd, Os, Ir, Pt, Ag, or Au) or compound containing |
| | 290.07 | And free carbon containing |
| | 290.08 | Noble metal (i.e., Ru, Rh, Pd, Os, Ir, Pt, Ag, or Au) or compound containing |
| | 290.1 | Rare earth metal (i.e., Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu) or compound containing |
| | 290.11 | Organic compound containing |
| | 290.12 | Refractory metal (i.e., Ti, V, Cr, Zr, Nb or Cb, Mo, Hf, Ta, or W) or compound containing |
| | 290.14 | Noble metal (i.e., Ru, Rh, Pd, Os, Ir, Pt, Ag, or Au) or compound containing |
| | 290.15 | Free carbon containing |
| | 291 | Composition |
| | 295 | Diaphragms |
| | 297.01 | Electrode support or work holder |
| [See the Search Notes for FOR Collections associated with this subclass or its indents )if there are indents).] | ||
| | 297.02 | Magnetic support |
| | 297.03 | Vacuum support |
| | 297.04 | Float or buoyant support |
| | 297.05 | Mask for workpiece |
| | 297.06 | Workpiece rack |
| | 297.07 | Adjustable |
| | 297.1 | Including resilient means (e.g., spring, etc.) |
| | 297.11 | Porous enclosure |
| | 297.12 | Grid or grating |
| | 297.13 | Including threaded connector |
| | 297.14 | Including resilient means (e.g., spring, etc.) |
| | 297.15 | Including threaded connector |
| | 297.16 | Hook or loop |
| | 298.01 | Coating, forming or etching by sputtering |
| | 298.02 | Coating |
| | 298.03 | Measuring, analyzing or testing |
| | 298.04 | Ion beam sputter deposition |
| | 298.05 | Ion plating |
| | 298.06 | Triode, tetrode, auxiliary electrode or biased workpiece |
| | 298.07 | Specified gas feed or withdrawal |
| | 298.08 | Specified power supply or matching network |
| | 298.09 | Specified cooling or heating |
| | 298.11 | Specified mask, shield or shutter |
| | 298.12 | Specified target particulars |
| | 298.14 | Specified anode particulars |
| | 298.15 | Specified work holder |
| | 298.16 | Magnetically enhanced |
| | 298.23 | Moving workpiece or target |
| | 298.24 | Indeterminate length moving workpiece |
| | 298.25 | Multi-chamber (e.g., including air lock, load/unload chamber, etc.) |
| | 298.26 | Plural diverse treatment stations, zones, or coating material source within single chamber |
| | 298.27 | Plural modes of movement (e.g., planetary, epicyclic, etc.) |
| | 298.28 | Rotational movement |
| | 298.29 | Oscillatory movement |
| | 298.31 | Etching |
| | 298.32 | Measuring, analyzing or testing |
| | 298.33 | Specified gas feed or withdrawal |
| | 298.34 | Auxiliary electrode, bias means or specified power supply |
| | 298.35 | Multi-chamber, load/unload means or moving workpiece |
| | 298.36 | Beam or directed flux etching (e.g., ion beam, etc.) |
| | 298.37 | Magnetically enhanced |
| | 298.38 | Microwave excitation |
| | 298.39 | Plural parallel plates (e.g., desmearing reactor, etc.) |
| | 298.41 | Vacuum arc discharge coating |
| | 600 | Electrophoretic or electro-osmotic apparatus |
| | 601 | Capillary electrophoresis type |
| | 602 | With control means responsive to sensed condition |
| | 603 | With detailed detection system (e.g., including a light source and a camera, etc.) |
| | 604 | With injector |
| | 605 | Gel filled |
| | 606 | Gel electrophoresis type |
| | 607 | With control means responsive to sensed condition |
| | 608 | With programmed, cyclic, or time responsive control means |
| | 609 | Plural rapid changes in direction of electric field (at least 1,000 times total and at more than 1/sec) (e.g., pulsed field, etc.) |
| | 610 | Isoelectric focusing (i.e., uses pH variation) |
| | 612 | With detailed detection system (e.g., including a light source and a camera, etc.) |
| | 613 | With means for posttreatment of gel to purify or recover a desired component |
| | 615 | Unitary preparation apparatus (e.g., preparative means, etc.) |
| | 616 | Slab gel |
| | 622 | Coating or forming means |
| | 623 | With moving or movable electrode |
| | 624 | And means for posttreatment of coating (e.g., drying, heating, curing, etc.) |
| | 625 | Coating interior of object or article (e.g., water main, automobile body, etc.) |
| | 626 | With means for regeneration or replenishment of coating bath or electrolyte |
| | 627 | Barrier separator (e.g., electrodialyzer, etc.) |
| | 628 | With control means responsive to sensed condition |
| | 629 | With moving or movable electrode |
| | 630 | Ion selective |
| | 631 | With bipolar membrane |
| | 632 | And ion exchange material (e.g., suspended ion exchange resin particles, etc.) |
| | 633 | Both anion and cation selective membranes |
| | 637 | And nonion selective membrane |
| | 638 | With foraminous or perforated membrane support or spacer (e.g., screen, perforated plate, fabric, etc.) |
| | 639 | With foraminous or perforated membrane support or spacer (e.g., screen, perforated plate, fabric, etc.) |
| | 640 | Cylindrical barrier (e.g., filter, membrane, etc.) |
| | 641 | Absorbent strip (e.g., cellulose acetate, paper strip, etc.) type |
| | 643 | Dielectrophoretic (i.e., uses nonuniform electric field) |
| | 644 | Isoelectric focusing (i.e., uses pH variation) |
| | 645 | Isotachophoretic (i.e., displacement electrophoretic) or means to measure ion or particle mobility |
| | 647 | Particle bed separator (e.g., inert particles, ion exchange beads, etc.) |
| | 648 | Bulk separator for solids and liquids (e.g., to dewater solids, clarify water, etc.) |
| | 650 | With moving or movable electrode |
| | 660 | Apparatus for electrical (including simultaneous electrical and magnetic) separation or purification of liquid or magnetic treatment of liquid (other than separation) |
| | 661 | With control means responsive to sensed condition |
| | 663 | With programmed, cyclic, or time responsive control means |
| | 664 | With magnetic separating means |
| | 665 | With filter (e.g., electrostatic filter, etc.) |
| | 666 | Plural separate treatment chambers or zones |
| | 667 | Probe type |
| | 668 | With moving or movable electrode |
| | 670 | Concentric electrodes |
| | 672 | Parallel plate-type electrodes |
| | 674 | Porous, perforated, or grid electrode |
| CROSS-REFERENCE ART COLLECTIONS | ||
| | 900 | EFFECTING A CHANGE IN ISOMERIZATION BY WAVE ENERGY |
| | 901 | EFFECTING A COLOR CHANGE BY WAVE ENERGY |
| | 902 | PRODUCTION OF DESIRED COMPOUND BY WAVE ENERGY IN PRESENCE OF A CHEMICALLY DESIGNATED NONREACTANT CHEMICAL TREATING AGENT (EXCLUDING WATER, CHLOROFORM, CARBON TETRACHLORIDE, METHYLENE CHLORIDE OR BENZENE) |
| | 903 | Inorganic chemical treating agent |
| | 907 | Silicon or boron treating agent |
| | 908 | Phosphorus treating agent |
| | 909 | Heavy metal treating agent |
| | 910 | Sulfur treating agent |
| | 911 | Nitrogen treating agent |
| | 912 | Oxygen treating agent |
| | 914 | Only carbon, hydrogen or halogen atom in treating agent |
| 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. | ||
| FOR920 | ELECTROLYTIC OBJECT PROTECTION APPARATUS (204/196) |
| FOR922 | ELECTROLYTIC CELLS WITH CURRENT CONTROL MEANS (204/228) |
| FOR923 | With fluid pressure, flow, or level intercontrol (204/229) |
| FOR925 | Auxiliary electrode (204/231) |
| FOR926 | ELECTROLYTIC FUSED BATH CELLS (204/243 R) |
| FOR930 | ELECTROLYTIC CELLS WITH FEEDING AND/OR WITHDRAWAL MEANS (204/275) |
| FOR931 | ELECTROLYTIC ELECTRODE ELEMENTS WITH SUPPORTING MEANS (204/286) |
| FOR932 | LAMINATED OR COATED ELECTROLYTIC ELECTRODE ELEMENTS (204/290 R) |
| FOR934 | ELECTROLYTIC ELECTRODE SUPPORTS AND WORK HOLDERS (204/297 R) |
| APPARATUS (204/193) |
| DIGESTS | ||
| | DIG3 | AUXILIARY INTERNALLY GENERATED ELECTRICAL ENERGY |
| | DIG4 | ELECTROLYSIS CELL COMBINED WITH FUEL CELL |
| | DIG5 | MAGNETIC PLUS ELECTROLYTIC |
| | DIG6 | UNUSUAL NON-204 USES OF ELECTROLYSIS |
| | DIG7 | CURRENT DISTRIBUTION WITHIN THE BATH |
| | DIG8 | AC PLUS DC |
| | DIG9 | WAVE FORMS |
| | DIG12 | ELECTROCHEMICAL MACHINING |
| | DIG13 | PURIFICATION AND TREATMENT OF ELECTROPLATING BATHS AND PLATING WASTES |