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Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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Class 75 | SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES |
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300 | COMPOSITIONS |
301 | Reactive furnace lining |
302 | Welding rod or electrode defined by composition |
303 | Solid treating composition for liquid metal (e.g., flux, slagging agent, casting agent, etc.) or charge |
304 | In wire, container, or article with surface feature |
305 | For casting or teeming operation |
306 | For electrothermic operation (e.g., electroslag remelting, etc.) |
307 | Containing Boron(B) compound |
308 | Containing Halide |
312 | Containing Carbide |
313 | Composition for or from consolidating by agglomerating, calcinating, compacting, indurating, roasting, sintering, or solidifying from molten mass |
314 | Containing free metal |
315 | Aluminum(Al) or Magnesium(Mg) as free metal |
316 | Iron(Fe), Iron scrap, or Iron alloy as free metal |
319 | Containing Iron(Fe) compound |
320 | And coal, coke, pitch, asphalt, or tar |
321 | And synthetic polymer, natural polymer, or carbohydrate |
322 | And clay (e.g., bentonite, montmorillonite, etc.), cement, or Alkali metal silicate |
323 | And Alkaline earth metal compound or Aluminum(Al) compound |
324 | Containing Zinc(Zn) compound |
325 | Containing coal, coke, pitch, asphalt, or tar |
326 | Containing clay (e.g., bentonite, montmorillonite, etc.), cement, or Alkali metal silicate |
327 | Containing Alkaline earth metal compound or Aluminum(Al) compound |
328 | Containing free metal |
329 | Containing Alkaline earth metal compound or Aluminum(Al) compound |
228 | Consolidated metal powder compositions |
229 | Flake or fibrous constituent or fibrous grain structure |
230 | With nonmetal constituent - Silicon(Si) considered a metal (e.g., cermet, etc.) |
231 | Molybdenum sulfide or functional constituent (e.g., lubricant, abrasive, etc.) |
232 | Oxide containing |
233 | With another nonmetal |
234 | Oxygen(O) associated with more than one metal |
235 | Oxide of Aluminum(Al), Beryllium(Be), Magnesium(Mg), Alkaline earth metal, Scandium(Sc), Yttrium(Y), Lanthanide metal, Actinide metal, Titanium (Ti), Zirconium(Zr), or Hafnium(Hf) |
236 | Carbide containing |
237 | With another nonmetal |
239 | Carbide only of Vanadium(V), Niobium(Nb) or Columbium(Cb), or Tantalum(Ta) |
240 | Carbide only of Chromium(Cr), Molybdenum(Mo), or Tungsten(W) |
241 | Carbon(C) associated with more than one metal |
243 | Nonmetal is elemental Carbon(C) only |
244 | Containing Boron(B) or Nitrogen(N) |
245 | Base metal one or more Transition metal |
246 | Base metal one or more of Iron group, Copper(Cu), or Noble metal |
248 | Base metal confined to Tungsten(W) |
249 | Base metal one or more of Beryllium(Be), Magnesium(Mg), or Aluminum(Al) |
255 | Loose particulate mixture (i.e., composition) containing metal particles |
330 | PROCESSES |
331 | Producing solid particulate free metal directly from liquid metal (e.g., liquid comminuting, etc.) |
332 | With subsequent coating of the particles |
333 | Utilizing centrifugal force or rotating forming zone to comminute liquid metal |
335 | By vibrating or agitating |
336 | Utilizing electrothermic energy to comminute |
337 | By impinging plural liquid streams |
338 | By impinging or atomizing with gaseous jet or blast |
340 | By extrusion spraying or gravity fall through orifice |
342 | Spheroidizing or rounding of existing solid metal particles |
343 | Producing or purifying free metal powder or producing or purifying alloys in powder form (i.e., named or of size up to 1,000 microns in its largest dimension) |
344 | Radioactive |
345 | Utilizing electrothermic, magnetic, or wave energy |
348 | Producing or purifying named magnetic material |
349 | Using Phosphorus(P), Boron(B), or Silicon(Si) or compound thereof |
350 | Using Alkaline earth metal or compound thereof |
351 | Producing alloy |
353 | Utilizing scrap material |
354 | Including comminution |
355 | Directly from liquid mass (e.g., by atomizing, etc.) |
356 | And shaping or sintering prior to comminution |
357 | With step at 300 degrees C or greater |
361 | Using nonmetallic material which is liquid under standard conditions |
362 | Decomposition of organo-compound containing metal or metal carbonyl |
363 | At 300 degrees C or greater |
364 | Combined with step at less than 300 degrees C using nonmetallic material which is liquid under standard conditions |
365 | Step at 300 degrees C or greater after step at less than 300 degrees C using nonmetallic material which is liquid under standard conditions |
366 | Utilizing a fluidized bed |
367 | Vaporizing or condensing free metal |
368 | Settling of powder in molten metal or salt bath |
369 | Purifying powdered metal or reducing powdered metal compound to free metal |
370 | Using nonmetallic material which is liquid under standard conditions |
10.1 | Electrothermic processes (e.g., microwave, induction, resistance, electric arc, plasma, etc.) |
10.11 | With zone melting or fractional crystallization |
10.12 | Controlling process through sensed condition |
10.13 | Electromagnetic wave energy (e.g., microwave, laser, etc.) |
10.14 | Electrical induction |
10.15 | Producing or treating Iron(Fe) or Iron alloy |
10.18 | Producing or treating Aluminum(Al), Beryllium(Be), Cobalt(Co), Chromium(Cr), Magnesium(Mg), Nickel(Ni), Titanium(Ti), or alloy thereof |
10.19 | Plasma |
10.2 | Influenced by magnetic field |
10.21 | Producing or treating Aluminum(Al) or Aluminum alloy |
10.22 | Producing or treating Iron(Fe) or Iron alloy |
10.23 | Consumable metal-containing electrode |
10.24 | Electroslag remelting |
10.25 | Producing or treating Chromium(Cr), Cobalt(Co), Copper(Cu), Iron(Fe), Manganese(Mn), Nickel(Ni), Titanium(Ti), or alloy thereof |
10.26 | Producing or treating Titanium(Ti) or Zirconium(Zr) or alloy thereof |
10.27 | Carbothermic reduction of Aluminum(Al) compound |
10.28 | With volatilization of metal halide |
10.29 | Distillation or volatilization of refined metal or compound thereof |
10.34 | Rotating chamber |
10.35 | Reducing or smelting slag or dross as starting material |
10.36 | Exhaust or top gas reused or treated |
10.39 | Adding gaseous treating agent |
10.4 | Gas contains gaseous Oxygen |
10.43 | Hydrogen or Water vapor |
10.44 | Carbon monoxide or Carbon dioxide |
10.45 | Noble gas, Nitrogen, or inert gas not otherwise identified |
10.46 | Adding solid treating agent, slag or flux |
10.47 | Magnesium(Mg) or compound thereof |
10.48 | Aluminum(Al) or compound thereof |
10.49 | Boron(B) or compound thereof |
10.5 | Silicon(Si) or compound thereof |
10.54 | Alkali metal, Alkaline earth metal, or compound thereof |
10.55 | Calcium fluoride (e.g., Fluorspar, Fluorite, etc.) |
10.56 | Calcium carbide |
10.57 | Calcium carbonate (e.g., limestone, etc.) |
10.58 | Calcium oxide (e.g., lime, calx, etc.) |
10.59 | Carbon(C) containing material (e.g., Carbon, carbonaceous material, Carbide, etc.) |
10.62 | Reducing or smelting |
10.64 | Vacuum purifying or degassing |
10.65 | Melting or holding melt |
10.67 | Magnetic (e.g., electromagnetic, etc.) or electrostatic processes |
375 | Process control responsive to sensed condition |
376 | Removing material from process to sense condition |
378 | Pressure sensed |
380 | Temperature sensed |
384 | Composition sensed |
386 | Characteristic of treated material sensed (e.g., density, etc.) |
387 | Flow rate sensed |
388 | Preparing for amalgamation, preparing and amalgamating, or breaking amalgam to produce free metal |
389 | And displacing with a metal other than Mercury(Hg) |
390 | Utilizing a Halogen containing agent |
391 | Utilizing a Nitrogen(N) containing agent |
392 | Producing or treating free metal |
393 | Utilizing Radioactive material, producing or treating Radioactive metal |
400 | Free metal production from sea nodules |
404 | Separating liquid metal by centrifuging |
405 | Removing gas from liquid metal by use of gas permeable membrane |
406 | Adsorbing impurity from vaporous or liquid metal |
407 | Filtering vaporous or liquid metal |
408 | Alkali metal, singly or in combination |
409 | Magnesium(Mg) |
410 | Noble metal, singly or in combination |
411 | Copper(Cu) |
412 | Aluminum(Al) |
413 | From metal carbonyl or Carbon monoxide complex |
414 | At 300 degrees C or greater (e.g., pyrometallurgy, etc.) |
415 | Foam |
416 | Combined with step at less than 300 degrees C using nonmetallic material which is liquid under standard conditions (e.g., hydrometallurgy, etc.) |
417 | Obtaining metal from photographic waste |
418 | Obtaining metal from electrolytic slime |
419 | Step at less than 300 degrees C using nonmetallic material which is liquid under standard conditions after a step at 300 degrees C or greater |
420 | Step at less than 300 degrees C using nonmetallic material which is liquid under standard conditions is reduction to free metal |
426 | Noble metal obtained |
429 | Copper(Cu) obtained |
430 | Iron(Fe), Cobalt(Co), or Nickel(Ni) obtained |
431 | Zinc(Zn), Cadmium(Cd), or Mercury(Hg) obtained |
432 | Tin(Sn) or Lead(Pb) obtained |
433 | Iron(Fe) |
434 | With concurrent production of hydraulic cement |
435 | With concurrent production of Titanium dioxide |
436 | With consolidation (e.g., pelletizing, etc.) of solid metallic Iron(Fe) product after reduction |
437 | Reducing Iron(Fe) halide |
438 | Making wrought Iron(Fe) |
439 | Pouring molten Iron(Fe) into molten slag (i.e., Aston process) |
440 | Utilizing moving hearth |
441 | Directly from Iron(Fe) compound only (no metallic Iron) |
443 | Reducing in gaseous suspension |
444 | Fluidized bed |
445 | With melting of Iron(Fe) |
447 | With solid in fluidized bed in addition to reducible Iron(Fe) compound |
450 | Using plural fluidized bed furnaces |
451 | Using plural fluidized bed zones within a furnace |
452 | Solid product produced (without melting) |
453 | Cyclone apparatus used |
454 | Using same inlet to feed solid and gas |
458 | Blast furnace reduction to produce molten Iron(Fe) |
459 | Using additive to the blast |
467 | Tapping molten product |
468 | Top gas recovery |
469 | Specified method of charging burden |
470 | Defined composition of slag |
471 | Defined composition of reductant |
472 | Defined composition of Iron(Fe) source |
473 | Reduction in closed retort (e.g., Hoganas process, etc.) |
474 | Reduction in rotary kiln |
475 | With melting of Iron(Fe) product |
477 | Introducing solid reductant into rotary kiln |
478 | Solid reductant is recycled |
479 | Any part of the charge is consolidated by agglomerating, compacting, indurating, or sintering (e.g., pelletized ore, flux, or reductant, etc.) |
480 | Reducible Iron(Fe) compound and solid reductant fed through same end of rotary kiln |
482 | With generation of gaseous reductant outside rotary kiln |
483 | Superposed multiple hearth reduction |
484 | Moving furnace or hearth (e.g., moving belt, etc.) |
486 | Heating reduction zone by heat conducted through walls of zone |
488 | Reduction to metallic Iron(Fe) within shaft furnace |
489 | Externally supplied gas reductant |
490 | Solid Iron(Fe) produced within shaft furnace |
491 | With melting Iron(Fe) product outside shaft furnace |
493 | Using solid Carbon(C) to generate gas in separate furnace (e.g., Wiberg process, etc.) |
495 | Direct addition of gas containing gaseous Oxygen or water to shaft furnace (e.g., continuous HyL process, etc.) |
496 | With reformation of reducing gas in separate furnace (e.g., Midrex process, etc.) |
499 | Molten Iron(Fe) produced in shaft furnace |
500 | Reduction in molten state |
501 | Gas injection below surface of melt |
502 | Gas injection over surface of melt (e.g., as in reverberatory furnace, etc.) |
503 | Reduction in presence of solid Carbon(C) containing material (e.g., coke, coal, carbides, etc.) |
505 | Reduction with externally applied gas (e.g., batch HyL process, etc.) |
506 | Reduction in the presence of liquid carbonaceous reductant (e.g., petroleum, pitch, etc.) |
507 | Melting Iron(Fe) or treating molten Iron |
508 | Vacuum treatment of molten Iron(Fe) |
513 | In reverberatory furnace (e.g., open-hearth, Siemens-Martin, puddling, etc.) |
514 | With treating of molten Iron(Fe) with gas outside reverberatory furnace (e.g., in Bessemer converter, etc.) |
515 | With melting Iron(Fe) in shaft furnace |
516 | Using gaseous Oxygen in a higher concentration than in ambient air |
517 | With addition of solid elemental Carbon(C) or employing elemental Carbon furnace lining |
518 | With compound containing Alkali metal and Oxygen (e.g., Sodium nitrate, Sodium carbonate, etc.) |
519 | With Halogen or Halogen containing compound (e.g., Sodium chloride, Fluorspar, etc.) |
520 | With Alkaline earth metal or Magnesium(Mg) containing compound |
521 | With Transition metal compound |
523 | Melting solid Iron(Fe) |
524 | Sequential treatment of molten Iron(Fe) in plural apparatus with different linings (e.g., acid Bessemer followed by basic Bessemer, etc.) |
525 | Impinging free falling molten metal stream or spray with a gas or solid agent or spraying (e.g., atomizing, etc.) of molten metal |
526 | Adding solid treating agent in form of wire, rod, or article with surface feature or in container or by plunging means |
527 | In rotary kiln (e.g., Kaldo process, etc.) |
528 | Injecting gas or nonmetalliferous liquid which gasifies into, onto, or through premelted Iron(Fe) or slag layer thereon |
529 | With hydrocarbon liquid or gas present |
530 | And hydrocarbon in surrounding relationship to gaseous Oxygen (e.g., hydrocarbon in outer concentric tube, etc.) |
531 | And adding solid agent, slag, or flux to premelted Iron(Fe) or slag layer thereon |
532 | Loose elemental Carbon(C), coal, or coke (e.g., carburizing, etc.) |
533 | With solid entrained in gas or injected by gas pressure |
534 | Boron(B) or compound thereof used in process |
535 | Metal halide used in process |
536 | Carbide used in process |
537 | Elemental metal or elemental Silicon(Si) used in process |
538 | Iron(Fe) containing compound used in process |
539 | Alkali metal compound or Alkaline earth metal compound used in process |
540 | Gas contains gaseous Oxygen |
541 | Metal halide |
542 | Carbide |
543 | Elemental metal or elemental Silicon(Si) |
544 | Iron(Fe) containing compound |
545 | Alkali metal compound or Alkaline earth metal compound |
546 | Noble gas or inert gas not otherwise identified |
547 | Gas compound containing Oxygen (e.g., Carbon monoxide, Carbon dioxide, Water, etc.) |
548 | Gas contains gaseous Oxygen |
549 | With treatment of exhaust gas |
551 | Injecting from above and below melt surface |
553 | Injecting only from above melt surface |
556 | Injecting only from below melt surface |
558 | Noble gas or inert gas not otherwise identified |
559 | Gas compound containing Oxygen (e.g., Carbon monoxide, Carbon dioxide, Water, etc.) |
560 | Treating premelted Iron(Fe) or slag layer thereon by adding solid agent, slag, or flux |
561 | Loose elemental Carbon(C), coal, or coke (e.g., carburizing, etc.) |
562 | Sulfur(S) or compound thereof |
563 | Nitrate, Chlorate, Permanganate, or Peroxide |
564 | Boron(B) or compound thereof |
565 | Metal halide |
566 | Carbide |
567 | Elemental metal or elemental Silicon(Si) |
569 | Iron(Fe) containing compound |
570 | Alkali metal compound or Alkaline earth metal compound |
571 | Melting solid Iron(Fe) |
572 | Melting packaged Iron(Fe) or Iron of specified structure to facilitate melting (e.g., shaped bale of scrap, etc.) |
573 | In shaft furnace (e.g., cupola, etc.) |
574 | Without the use of solid, carbonaceous material (e.g., without coke, etc.) |
575 | Using Oxygen in a higher concentration than ambient air |
576 | Using both a solid carbonaceous fuel (e.g., coke, etc.) and a fluid (e.g, natural gas, etc.) |
577 | Defined composition of solid fuel other than nominal "coke" |
578 | With Calcium carbide |
579 | With Alkali metal compound |
580 | In closed vessel with heat conducted through walls only (e.g., crucible melting, etc.) |
581 | Melting scrap |
582 | Separating slag from molten Iron(Fe) |
583 | Stirring or agitating molten Iron(Fe) |
584 | Pouring or tapping molten Iron(Fe) |
585 | Nonferrous |
586 | Concurrent production of Nonferrous metal and other desired nonmetallic product (e.g., cement, etc.) |
587 | Countercurrent liquid-liquid extraction of molten Nonferrous metal |
588 | Fractionation of molten Nonferrous metal (e.g., with reflux, etc.) |
589 | Alkali metal, singly or in combination |
593 | Beryllium(Be) |
594 | Magnesium(Mg) |
605 | Alkaline earth metal, singly or in combination |
610 | Rare earth metal, singly or in combination |
611 | Refractory metal, singly or in combination |
612 | Titanium(Ti), Zirconium(Zr), or Hafnium(Hf), singly or in combination |
613 | Reduction |
614 | Using free metal or alloy reductant |
620 | Of Titanium(Ti), Zirconium(Zr), or Hafnium(Hf) compound containing Halogen |
621 | Treating molten Titanium(Ti), Zirconium(Zr), or Hafnium(Hf) |
622 | Vanadium(V), Niobium(Nb) or Columbium(Cb), or Tantalum(Ta), singly or in combination |
623 | Chromium(Cr), Molybdenum(Mo), or Tungsten(W), singly or in combination |
624 | Manganese(Mn) |
626 | Cobalt(Co) |
628 | Nickel(Ni) |
631 | Noble metal, singly or in combination |
638 | Copper(Cu) |
639 | Treating material in gaseous suspension |
640 | Treating slag or dross |
641 | Reduction |
646 | Treating molten Copper(Cu) |
653 | Melting Copper(Cu) in shaft furnace |
654 | Zinc(Zn) |
655 | Treating slag or dross |
656 | Reduction |
663 | Treating molten or vaporous Zinc(Zn) |
668 | Cadmium(Cd) |
670 | Mercury(Hg) |
671 | Aluminum(Al) |
672 | Treating slag or dross |
673 | Reduction |
674 | Carbothermic |
675 | Decomposition of organo-compound containing Aluminum(Al) |
676 | Of Aluminum(Al) halide |
678 | Treating molten Aluminum(Al) |
686 | Melting Aluminum(Al) |
688 | Gallium(Ga) or Indium(In) |
689 | Germanium(Ge) |
690 | Tin(Sn) |
693 | Lead(Pb) |
694 | Treating material in gaseous suspension or gaseous state |
695 | Reduction |
697 | Treating molten Lead(Pb) |
703 | Antimony(Sb) |
705 | Bismuth(Bi) |
706 | Arsenic(As) |
707 | Reducing or smelting unnamed ore |
708 | Stirring or agitating of molten material |
709 | Covering the surface of molten metal |
710 | Below 300 degrees C |
711 | Using nonmetallic material which is liquid under standard conditions (e.g., hydrometallurgy, etc.) |
712 | Involving mining or in situ operation |
713 | From photography material |
714 | From electrolytic or cementation slime |
715 | Removing coating to recover free metal from substrate or coating |
717 | Reducing to free metal with gas |
721 | Utilizing organic reducing agent |
722 | Involving organic compound containing metal or organic agent for agglomerating metal |
724 | Displacing by another metal (i.e., electromotive series) |
725 | Lead(Pb) or Zinc(Zn) recovered as free metal |
726 | Copper(Cu) recovered as free metal |
727 | And flotation |
728 | And injecting or pressurizing with air or Oxygen |
729 | From Cyanide solution |
730 | With agitating or abrading |
731 | Utilizing leaching agent containing Sulfur(S) |
732 | Noble metal recovered as free metal |
738 | Nickel(Ni) or Cobalt(Co) recovered as free metal |
739 | Utilizing chemical agent to precipitate free metal |
742 | Cleaning, leaching, or dissolving of Mercury(Hg) |
743 | With leaching or dissolving |
745 | Alkali metal, singly or in combination |
747 | Noble metal containing metalliferous material |
748 | With vaporization of impurity as metal halide |
749 | With physical separation or classification of solids |
751 | With heat treatment (e.g., calcinating, fusing, indurating, roasting, sintering, vaporizing, etc.) |
752 | Vaporizing metalliferous impurity |
753 | With leaching, dissolving, or washing |
754 | By suspension (e.g., fluid bed, cyclone, etc.) |
755 | On moving grate, moving pallet, or endless belt |
760 | In shaft furnace or multi-hearth furnace |
762 | In rotary kiln |
764 | Coking of binder or additive |
765 | Sintering or with agglomerating or compacting |
770 | Agglomerating or compacting |
CROSS-REFERENCE ART COLLECTIONS | ||
950 | CONSOLIDATED METAL POWDER COMPOSITIONS OF >95% THEORETICAL DENSITY (E.G., WROUGHT, ETC.) |
952 | PRODUCING FIBERS, FILAMENTS, OR WHISKERS |
953 | PRODUCING SPHERES |
954 | PRODUCING FLAKES OR CRYSTALS |
955 | PRODUCING DENTAL PRODUCT |
956 | PRODUCING PARTICLES CONTAINING A DISPERSED PHASE |
957 | CONTINUOUS REFINING OF MOLTEN IRON(FE) |
958 | WITH CONCURRENT PRODUCTION OF IRON(FE) AND OTHER DESIRED NONMETALLIC PRODUCT (E.G., ENERGY, FERTILIZER, ETC.) |
959 | THERMIT-TYPE REACTION OF SOLID MATERIALS ONLY TO YIELD MOLTEN METAL |
960 | IN ZERO GRAVITY ENVIRONMENT |
961 | TREATING FLUE DUST TO OBTAIN METAL (OTHER THAN BY CONSOLIDATION) |
962 | TREATING OR USING MILL SCALE |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
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