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Classification Resources
 
Class   75SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES
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[List of Pre Grant Publications for class 75 subclass 300][List of Patents for class 75 subclass 300]300 COMPOSITIONS
 [List of Pre Grant Publications for class 75 subclass 301][List of Patents for class 75 subclass 301]301 Subclass 301 indent level is 1 Reactive furnace lining
 [List of Pre Grant Publications for class 75 subclass 302][List of Patents for class 75 subclass 302]302 Subclass 302 indent level is 1 Welding rod or electrode defined by composition
[List of Pre Grant Publications for class 75 subclass 303][List of Patents for class 75 subclass 303]303 Subclass 303 indent level is 1 Solid treating composition for liquid metal (e.g., flux, slagging agent, casting agent, etc.) or charge
[List of Pre Grant Publications for class 75 subclass 228][List of Patents for class 75 subclass 228]228 Subclass 228 indent level is 1 Consolidated metal powder compositions
[List of Pre Grant Publications for class 75 subclass 255][List of Patents for class 75 subclass 255]255 Subclass 255 indent level is 1 Loose particulate mixture (i.e., composition) containing metal particles
[List of Pre Grant Publications for class 75 subclass 330][List of Patents for class 75 subclass 330]330 PROCESSES
[List of Pre Grant Publications for class 75 subclass 331][List of Patents for class 75 subclass 331]331 Subclass 331 indent level is 1 Producing solid particulate free metal directly from liquid metal (e.g., liquid comminuting, etc.)
 [List of Pre Grant Publications for class 75 subclass 342][List of Patents for class 75 subclass 342]342 Subclass 342 indent level is 1 Spheroidizing or rounding of existing solid metal particles
[List of Pre Grant Publications for class 75 subclass 343][List of Patents for class 75 subclass 343]343 Subclass 343 indent level is 1 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)
 [List of Pre Grant Publications for class 75 subclass 344][List of Patents for class 75 subclass 344]344 Subclass 344 indent level is 2 Radioactive
[List of Pre Grant Publications for class 75 subclass 345][List of Patents for class 75 subclass 345]345 Subclass 345 indent level is 2 Utilizing electrothermic, magnetic, or wave energy
[List of Pre Grant Publications for class 75 subclass 348][List of Patents for class 75 subclass 348]348 Subclass 348 indent level is 2 Producing or purifying named magnetic material
[List of Pre Grant Publications for class 75 subclass 351][List of Patents for class 75 subclass 351]351 Subclass 351 indent level is 2 Producing alloy
 [List of Pre Grant Publications for class 75 subclass 353][List of Patents for class 75 subclass 353]353 Subclass 353 indent level is 2 Utilizing scrap material
[List of Pre Grant Publications for class 75 subclass 354][List of Patents for class 75 subclass 354]354 Subclass 354 indent level is 2 Including comminution
 [List of Pre Grant Publications for class 75 subclass 362][List of Patents for class 75 subclass 362]362 Subclass 362 indent level is 2 Decomposition of organo-compound containing metal or metal carbonyl
[List of Pre Grant Publications for class 75 subclass 363][List of Patents for class 75 subclass 363]363 Subclass 363 indent level is 2 At 300 degrees C or greater
[List of Pre Grant Publications for class 75 subclass 370][List of Patents for class 75 subclass 370]370 Subclass 370 indent level is 2 Using nonmetallic material which is liquid under standard conditions
[List of Pre Grant Publications for class 75 subclass 10.1][List of Patents for class 75 subclass 10.1]10.1 Subclass 10.1 indent level is 1 Electrothermic processes (e.g., microwave, induction, resistance, electric arc, plasma, etc.)
 [List of Pre Grant Publications for class 75 subclass 10.11][List of Patents for class 75 subclass 10.11]10.11 Subclass 10.11 indent level is 2 With zone melting or fractional crystallization
 [List of Pre Grant Publications for class 75 subclass 10.12][List of Patents for class 75 subclass 10.12]10.12 Subclass 10.12 indent level is 2 Controlling process through sensed condition
 [List of Pre Grant Publications for class 75 subclass 10.13][List of Patents for class 75 subclass 10.13]10.13 Subclass 10.13 indent level is 2 Electromagnetic wave energy (e.g., microwave, laser, etc.)
[List of Pre Grant Publications for class 75 subclass 10.14][List of Patents for class 75 subclass 10.14]10.14 Subclass 10.14 indent level is 2 Electrical induction
[List of Pre Grant Publications for class 75 subclass 10.19][List of Patents for class 75 subclass 10.19]10.19 Subclass 10.19 indent level is 2 Plasma
[List of Pre Grant Publications for class 75 subclass 10.23][List of Patents for class 75 subclass 10.23]10.23 Subclass 10.23 indent level is 2 Consumable metal-containing electrode
 [List of Pre Grant Publications for class 75 subclass 10.27][List of Patents for class 75 subclass 10.27]10.27 Subclass 10.27 indent level is 2 Carbothermic reduction of Aluminum(Al) compound
 [List of Pre Grant Publications for class 75 subclass 10.28][List of Patents for class 75 subclass 10.28]10.28 Subclass 10.28 indent level is 2 With volatilization of metal halide
[List of Pre Grant Publications for class 75 subclass 10.29][List of Patents for class 75 subclass 10.29]10.29 Subclass 10.29 indent level is 2 Distillation or volatilization of refined metal or compound thereof
 [List of Pre Grant Publications for class 75 subclass 10.34][List of Patents for class 75 subclass 10.34]10.34 Subclass 10.34 indent level is 2 Rotating chamber
 [List of Pre Grant Publications for class 75 subclass 10.35][List of Patents for class 75 subclass 10.35]10.35 Subclass 10.35 indent level is 2 Reducing or smelting slag or dross as starting material
[List of Pre Grant Publications for class 75 subclass 10.36][List of Patents for class 75 subclass 10.36]10.36 Subclass 10.36 indent level is 2 Exhaust or top gas reused or treated
[List of Pre Grant Publications for class 75 subclass 10.39][List of Patents for class 75 subclass 10.39]10.39 Subclass 10.39 indent level is 2 Adding gaseous treating agent
[List of Pre Grant Publications for class 75 subclass 10.46][List of Patents for class 75 subclass 10.46]10.46 Subclass 10.46 indent level is 2 Adding solid treating agent, slag or flux
[List of Pre Grant Publications for class 75 subclass 10.62][List of Patents for class 75 subclass 10.62]10.62 Subclass 10.62 indent level is 2 Reducing or smelting
 [List of Pre Grant Publications for class 75 subclass 10.64][List of Patents for class 75 subclass 10.64]10.64 Subclass 10.64 indent level is 2 Vacuum purifying or degassing
[List of Pre Grant Publications for class 75 subclass 10.65][List of Patents for class 75 subclass 10.65]10.65 Subclass 10.65 indent level is 2 Melting or holding melt
 [List of Pre Grant Publications for class 75 subclass 10.67][List of Patents for class 75 subclass 10.67]10.67 Subclass 10.67 indent level is 1 Magnetic (e.g., electromagnetic, etc.) or electrostatic processes
[List of Pre Grant Publications for class 75 subclass 375][List of Patents for class 75 subclass 375]375 Subclass 375 indent level is 1 Process control responsive to sensed condition
[List of Pre Grant Publications for class 75 subclass 388][List of Patents for class 75 subclass 388]388 Subclass 388 indent level is 1 Preparing for amalgamation, preparing and amalgamating, or breaking amalgam to produce free metal
[List of Pre Grant Publications for class 75 subclass 392][List of Patents for class 75 subclass 392]392 Subclass 392 indent level is 1 Producing or treating free metal
[List of Pre Grant Publications for class 75 subclass 393][List of Patents for class 75 subclass 393]393 Subclass 393 indent level is 2 Utilizing Radioactive material, producing or treating Radioactive metal
 [List of Pre Grant Publications for class 75 subclass 400][List of Patents for class 75 subclass 400]400 Subclass 400 indent level is 2 Free metal production from sea nodules
[List of Pre Grant Publications for class 75 subclass 401][List of Patents for class 75 subclass 401]401 Subclass 401 indent level is 2 Treating multicomponent metal-containing scrap having an integral substrate to separate metal therefrom by temperature modification or chemical process at least one metal remains solid during separation
 [List of Pre Grant Publications for class 75 subclass 404][List of Patents for class 75 subclass 404]404 Subclass 404 indent level is 2 Separating liquid metal by centrifuging
 [List of Pre Grant Publications for class 75 subclass 405][List of Patents for class 75 subclass 405]405 Subclass 405 indent level is 2 Removing gas from liquid metal by use of gas permeable membrane
 [List of Pre Grant Publications for class 75 subclass 406][List of Patents for class 75 subclass 406]406 Subclass 406 indent level is 2 Adsorbing impurity from vaporous or liquid metal
[List of Pre Grant Publications for class 75 subclass 407][List of Patents for class 75 subclass 407]407 Subclass 407 indent level is 2 Filtering vaporous or liquid metal
 [List of Pre Grant Publications for class 75 subclass 413][List of Patents for class 75 subclass 413]413 Subclass 413 indent level is 2 From metal carbonyl or Carbon monoxide complex
[List of Pre Grant Publications for class 75 subclass 414][List of Patents for class 75 subclass 414]414 Subclass 414 indent level is 2 At 300 degrees C or greater (e.g., pyrometallurgy, etc.)
 [List of Pre Grant Publications for class 75 subclass 415][List of Patents for class 75 subclass 415]415 Subclass 415 indent level is 3 Foam
[List of Pre Grant Publications for class 75 subclass 416][List of Patents for class 75 subclass 416]416 Subclass 416 indent level is 3 Combined with step at less than 300 degrees C using nonmetallic material which is liquid under standard conditions (e.g., hydrometallurgy, etc.)
[List of Pre Grant Publications for class 75 subclass 433][List of Patents for class 75 subclass 433]433 Subclass 433 indent level is 3 Iron(Fe)
 [List of Pre Grant Publications for class 75 subclass 434][List of Patents for class 75 subclass 434]434 Subclass 434 indent level is 4 With concurrent production of hydraulic cement
 [List of Pre Grant Publications for class 75 subclass 435][List of Patents for class 75 subclass 435]435 Subclass 435 indent level is 4 With concurrent production of Titanium dioxide
 [List of Pre Grant Publications for class 75 subclass 436][List of Patents for class 75 subclass 436]436 Subclass 436 indent level is 4 With consolidation (e.g., pelletizing, etc.) of solid metallic Iron(Fe) product after reduction
 [List of Pre Grant Publications for class 75 subclass 437][List of Patents for class 75 subclass 437]437 Subclass 437 indent level is 4 Reducing Iron(Fe) halide
[List of Pre Grant Publications for class 75 subclass 438][List of Patents for class 75 subclass 438]438 Subclass 438 indent level is 4 Making wrought Iron(Fe)
[List of Pre Grant Publications for class 75 subclass 443][List of Patents for class 75 subclass 443]443 Subclass 443 indent level is 4 Reducing in gaseous suspension
[List of Pre Grant Publications for class 75 subclass 458][List of Patents for class 75 subclass 458]458 Subclass 458 indent level is 4 Blast furnace reduction to produce molten Iron(Fe)
 [List of Pre Grant Publications for class 75 subclass 473][List of Patents for class 75 subclass 473]473 Subclass 473 indent level is 4 Reduction in closed retort (e.g., Hoganas process, etc.)
[List of Pre Grant Publications for class 75 subclass 474][List of Patents for class 75 subclass 474]474 Subclass 474 indent level is 4 Reduction in rotary kiln
 [List of Pre Grant Publications for class 75 subclass 483][List of Patents for class 75 subclass 483]483 Subclass 483 indent level is 4 Superposed multiple hearth reduction
[List of Pre Grant Publications for class 75 subclass 484][List of Patents for class 75 subclass 484]484 Subclass 484 indent level is 4 Moving furnace or hearth (e.g., moving belt, etc.)
[List of Pre Grant Publications for class 75 subclass 486][List of Patents for class 75 subclass 486]486 Subclass 486 indent level is 4 Heating reduction zone by heat conducted through walls of zone
[List of Pre Grant Publications for class 75 subclass 488][List of Patents for class 75 subclass 488]488 Subclass 488 indent level is 4 Reduction to metallic Iron(Fe) within shaft furnace
[List of Pre Grant Publications for class 75 subclass 500][List of Patents for class 75 subclass 500]500 Subclass 500 indent level is 4 Reduction in molten state
[List of Pre Grant Publications for class 75 subclass 503][List of Patents for class 75 subclass 503]503 Subclass 503 indent level is 4 Reduction in presence of solid Carbon(C) containing material (e.g., coke, coal, carbides, etc.)
 [List of Pre Grant Publications for class 75 subclass 505][List of Patents for class 75 subclass 505]505 Subclass 505 indent level is 4 Reduction with externally applied gas (e.g., batch HyL process, etc.)
 [List of Pre Grant Publications for class 75 subclass 506][List of Patents for class 75 subclass 506]506 Subclass 506 indent level is 4 Reduction in the presence of liquid carbonaceous reductant (e.g., petroleum, pitch, etc.)
[List of Pre Grant Publications for class 75 subclass 507][List of Patents for class 75 subclass 507]507 Subclass 507 indent level is 4 Melting Iron(Fe) or treating molten Iron
[List of Pre Grant Publications for class 75 subclass 508][List of Patents for class 75 subclass 508]508 Subclass 508 indent level is 5 Vacuum treatment of molten Iron(Fe)
[List of Pre Grant Publications for class 75 subclass 513][List of Patents for class 75 subclass 513]513 Subclass 513 indent level is 5 In reverberatory furnace (e.g., open-hearth, Siemens-Martin, puddling, etc.)
 [List of Pre Grant Publications for class 75 subclass 524][List of Patents for class 75 subclass 524]524 Subclass 524 indent level is 5 Sequential treatment of molten Iron(Fe) in plural apparatus with different linings (e.g., acid Bessemer followed by basic Bessemer, etc.)
 [List of Pre Grant Publications for class 75 subclass 525][List of Patents for class 75 subclass 525]525 Subclass 525 indent level is 5 Impinging free falling molten metal stream or spray with a gas or solid agent or spraying (e.g., atomizing, etc.) of molten metal
 [List of Pre Grant Publications for class 75 subclass 526][List of Patents for class 75 subclass 526]526 Subclass 526 indent level is 5 Adding solid treating agent in form of wire, rod, or article with surface feature or in container or by plunging means
 [List of Pre Grant Publications for class 75 subclass 527][List of Patents for class 75 subclass 527]527 Subclass 527 indent level is 5 In rotary kiln (e.g., Kaldo process, etc.)
[List of Pre Grant Publications for class 75 subclass 528][List of Patents for class 75 subclass 528]528 Subclass 528 indent level is 5 Injecting gas or nonmetalliferous liquid which gasifies into, onto, or through premelted Iron(Fe) or slag layer thereon
[List of Pre Grant Publications for class 75 subclass 529][List of Patents for class 75 subclass 529]529 Subclass 529 indent level is 6 With hydrocarbon liquid or gas present
[List of Pre Grant Publications for class 75 subclass 531][List of Patents for class 75 subclass 531]531 Subclass 531 indent level is 6 And adding solid agent, slag, or flux to premelted Iron(Fe) or slag layer thereon
[List of Pre Grant Publications for class 75 subclass 548][List of Patents for class 75 subclass 548]548 Subclass 548 indent level is 6 Gas contains gaseous Oxygen
 [List of Pre Grant Publications for class 75 subclass 558][List of Patents for class 75 subclass 558]558 Subclass 558 indent level is 6 Noble gas or inert gas not otherwise identified
 [List of Pre Grant Publications for class 75 subclass 559][List of Patents for class 75 subclass 559]559 Subclass 559 indent level is 6 Gas compound containing Oxygen (e.g., Carbon monoxide, Carbon dioxide, Water, etc.)
[List of Pre Grant Publications for class 75 subclass 560][List of Patents for class 75 subclass 560]560 Subclass 560 indent level is 5 Treating premelted Iron(Fe) or slag layer thereon by adding solid agent, slag, or flux
[List of Pre Grant Publications for class 75 subclass 571][List of Patents for class 75 subclass 571]571 Subclass 571 indent level is 5 Melting solid Iron(Fe)
 [List of Pre Grant Publications for class 75 subclass 582][List of Patents for class 75 subclass 582]582 Subclass 582 indent level is 5 Separating slag from molten Iron(Fe)
 [List of Pre Grant Publications for class 75 subclass 583][List of Patents for class 75 subclass 583]583 Subclass 583 indent level is 5 Stirring or agitating molten Iron(Fe)
 [List of Pre Grant Publications for class 75 subclass 584][List of Patents for class 75 subclass 584]584 Subclass 584 indent level is 5 Pouring or tapping molten Iron(Fe)
[List of Pre Grant Publications for class 75 subclass 585][List of Patents for class 75 subclass 585]585 Subclass 585 indent level is 3 Nonferrous
 [List of Pre Grant Publications for class 75 subclass 586][List of Patents for class 75 subclass 586]586 Subclass 586 indent level is 4 Concurrent production of Nonferrous metal and other desired nonmetallic product (e.g., cement, etc.)
 [List of Pre Grant Publications for class 75 subclass 587][List of Patents for class 75 subclass 587]587 Subclass 587 indent level is 4 Countercurrent liquid-liquid extraction of molten Nonferrous metal
 [List of Pre Grant Publications for class 75 subclass 588][List of Patents for class 75 subclass 588]588 Subclass 588 indent level is 4 Fractionation of molten Nonferrous metal (e.g., with reflux, etc.)
[List of Pre Grant Publications for class 75 subclass 589][List of Patents for class 75 subclass 589]589 Subclass 589 indent level is 4 Alkali metal, singly or in combination
 [List of Pre Grant Publications for class 75 subclass 593][List of Patents for class 75 subclass 593]593 Subclass 593 indent level is 4 Beryllium(Be)
[List of Pre Grant Publications for class 75 subclass 594][List of Patents for class 75 subclass 594]594 Subclass 594 indent level is 4 Magnesium(Mg)
[List of Pre Grant Publications for class 75 subclass 605][List of Patents for class 75 subclass 605]605 Subclass 605 indent level is 4 Alkaline earth metal, singly or in combination
 [List of Pre Grant Publications for class 75 subclass 610][List of Patents for class 75 subclass 610]610 Subclass 610 indent level is 4 Rare earth metal, singly or in combination
[List of Pre Grant Publications for class 75 subclass 611][List of Patents for class 75 subclass 611]611 Subclass 611 indent level is 4 Refractory metal, singly or in combination
[List of Pre Grant Publications for class 75 subclass 624][List of Patents for class 75 subclass 624]624 Subclass 624 indent level is 4 Manganese(Mn)
[List of Pre Grant Publications for class 75 subclass 626][List of Patents for class 75 subclass 626]626 Subclass 626 indent level is 4 Cobalt(Co)
[List of Pre Grant Publications for class 75 subclass 628][List of Patents for class 75 subclass 628]628 Subclass 628 indent level is 4 Nickel(Ni)
[List of Pre Grant Publications for class 75 subclass 631][List of Patents for class 75 subclass 631]631 Subclass 631 indent level is 4 Noble metal, singly or in combination
[List of Pre Grant Publications for class 75 subclass 638][List of Patents for class 75 subclass 638]638 Subclass 638 indent level is 4 Copper(Cu)
[List of Pre Grant Publications for class 75 subclass 654][List of Patents for class 75 subclass 654]654 Subclass 654 indent level is 4 Zinc(Zn)
[List of Pre Grant Publications for class 75 subclass 668][List of Patents for class 75 subclass 668]668 Subclass 668 indent level is 4 Cadmium(Cd)
 [List of Pre Grant Publications for class 75 subclass 670][List of Patents for class 75 subclass 670]670 Subclass 670 indent level is 4 Mercury(Hg)
[List of Pre Grant Publications for class 75 subclass 671][List of Patents for class 75 subclass 671]671 Subclass 671 indent level is 4 Aluminum(Al)
 [List of Pre Grant Publications for class 75 subclass 688][List of Patents for class 75 subclass 688]688 Subclass 688 indent level is 4 Gallium(Ga) or Indium(In)
 [List of Pre Grant Publications for class 75 subclass 689][List of Patents for class 75 subclass 689]689 Subclass 689 indent level is 4 Germanium(Ge)
[List of Pre Grant Publications for class 75 subclass 690][List of Patents for class 75 subclass 690]690 Subclass 690 indent level is 4 Tin(Sn)
[List of Pre Grant Publications for class 75 subclass 693][List of Patents for class 75 subclass 693]693 Subclass 693 indent level is 4 Lead(Pb)
[List of Pre Grant Publications for class 75 subclass 703][List of Patents for class 75 subclass 703]703 Subclass 703 indent level is 4 Antimony(Sb)
 [List of Pre Grant Publications for class 75 subclass 705][List of Patents for class 75 subclass 705]705 Subclass 705 indent level is 4 Bismuth(Bi)
 [List of Pre Grant Publications for class 75 subclass 706][List of Patents for class 75 subclass 706]706 Subclass 706 indent level is 4 Arsenic(As)
 [List of Pre Grant Publications for class 75 subclass 707][List of Patents for class 75 subclass 707]707 Subclass 707 indent level is 3 Reducing or smelting unnamed ore
 [List of Pre Grant Publications for class 75 subclass 708][List of Patents for class 75 subclass 708]708 Subclass 708 indent level is 3 Stirring or agitating of molten material
 [List of Pre Grant Publications for class 75 subclass 709][List of Patents for class 75 subclass 709]709 Subclass 709 indent level is 3 Covering the surface of molten metal
[List of Pre Grant Publications for class 75 subclass 710][List of Patents for class 75 subclass 710]710 Subclass 710 indent level is 2 Below 300 degrees C
[List of Pre Grant Publications for class 75 subclass 711][List of Patents for class 75 subclass 711]711 Subclass 711 indent level is 3 Using nonmetallic material which is liquid under standard conditions (e.g., hydrometallurgy, etc.)
 [List of Pre Grant Publications for class 75 subclass 745][List of Patents for class 75 subclass 745]745 Subclass 745 indent level is 3 Alkali metal, singly or in combination
[List of Pre Grant Publications for class 75 subclass 746][List of Patents for class 75 subclass 746]746 Subclass 746 indent level is 1 Consolidating metalliferous material (e.g., ore, tailings, flue dust, fluxes, etc.) by agglomerating, compacting, or heat treating; preparatory process therefor; or treating consolidated material therefrom
 
CROSS-REFERENCE ART COLLECTIONS
 
[List of Pre Grant Publications for class 75 subclass 950][List of Patents for class 75 subclass 950]950 CONSOLIDATED METAL POWDER COMPOSITIONS OF >95% THEORETICAL DENSITY (E.G., WROUGHT, ETC.)
 [List of Pre Grant Publications for class 75 subclass 952][List of Patents for class 75 subclass 952]952 PRODUCING FIBERS, FILAMENTS, OR WHISKERS
 [List of Pre Grant Publications for class 75 subclass 953][List of Patents for class 75 subclass 953]953 PRODUCING SPHERES
 [List of Pre Grant Publications for class 75 subclass 954][List of Patents for class 75 subclass 954]954 PRODUCING FLAKES OR CRYSTALS
 [List of Pre Grant Publications for class 75 subclass 955][List of Patents for class 75 subclass 955]955 PRODUCING DENTAL PRODUCT
 [List of Pre Grant Publications for class 75 subclass 956][List of Patents for class 75 subclass 956]956 PRODUCING PARTICLES CONTAINING A DISPERSED PHASE
 [List of Pre Grant Publications for class 75 subclass 957][List of Patents for class 75 subclass 957]957 CONTINUOUS REFINING OF MOLTEN IRON(FE)
 [List of Pre Grant Publications for class 75 subclass 958][List of Patents for class 75 subclass 958]958 WITH CONCURRENT PRODUCTION OF IRON(FE) AND OTHER DESIRED NONMETALLIC PRODUCT (E.G., ENERGY, FERTILIZER, ETC.)
 [List of Pre Grant Publications for class 75 subclass 959][List of Patents for class 75 subclass 959]959 THERMIT-TYPE REACTION OF SOLID MATERIALS ONLY TO YIELD MOLTEN METAL
 [List of Pre Grant Publications for class 75 subclass 960][List of Patents for class 75 subclass 960]960 IN ZERO GRAVITY ENVIRONMENT
 [List of Pre Grant Publications for class 75 subclass 961][List of Patents for class 75 subclass 961]961 TREATING FLUE DUST TO OBTAIN METAL (OTHER THAN BY CONSOLIDATION)
 [List of Pre Grant Publications for class 75 subclass 962][List of Patents for class 75 subclass 962]962 TREATING OR USING MILL SCALE
 
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