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Class   419POWDER METALLURGY PROCESSES
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[List of Pre Grant Publications for class 419 subclass 1][List of Patents for class 419 subclass 1]1 POWDER METALLURGY PROCESSES WITH HEATING OR SINTERING
 [List of Pre Grant Publications for class 419 subclass 2][List of Patents for class 419 subclass 2]2 Subclass 2 indent level is 1 Making porous product
[List of Pre Grant Publications for class 419 subclass 3][List of Patents for class 419 subclass 3]3 Subclass 3 indent level is 1 Making articles of indefinite length
 [List of Pre Grant Publications for class 419 subclass 4][List of Patents for class 419 subclass 4]4 Subclass 4 indent level is 2 Filaments or fibers
[List of Pre Grant Publications for class 419 subclass 5][List of Patents for class 419 subclass 5]5 Subclass 5 indent level is 1 Making composite or hollow article
[List of Pre Grant Publications for class 419 subclass 6][List of Patents for class 419 subclass 6]6 Subclass 6 indent level is 2 Powder next to powder
[List of Pre Grant Publications for class 419 subclass 8][List of Patents for class 419 subclass 8]8 Subclass 8 indent level is 2 Powder next to solid
[List of Pre Grant Publications for class 419 subclass 10][List of Patents for class 419 subclass 10]10 Subclass 10 indent level is 1 Metal and nonmetal in final product
 [List of Pre Grant Publications for class 419 subclass 11][List of Patents for class 419 subclass 11]11 Subclass 11 indent level is 2 Nonmetal is elemental carbon
 [List of Pre Grant Publications for class 419 subclass 12][List of Patents for class 419 subclass 12]12 Subclass 12 indent level is 2 Boride containing
 [List of Pre Grant Publications for class 419 subclass 13][List of Patents for class 419 subclass 13]13 Subclass 13 indent level is 2 Nitride containing
[List of Pre Grant Publications for class 419 subclass 14][List of Patents for class 419 subclass 14]14 Subclass 14 indent level is 2 Carbide containing
[List of Pre Grant Publications for class 419 subclass 19][List of Patents for class 419 subclass 19]19 Subclass 19 indent level is 2 Oxide containing
[List of Pre Grant Publications for class 419 subclass 23][List of Patents for class 419 subclass 23]23 Subclass 23 indent level is 1 Powder shape or size characteristics
 [List of Pre Grant Publications for class 419 subclass 24][List of Patents for class 419 subclass 24]24 Subclass 24 indent level is 2 Filaments or fibers
 [List of Pre Grant Publications for class 419 subclass 25][List of Patents for class 419 subclass 25]25 Subclass 25 indent level is 1 Controlled cooling after sintering
[List of Pre Grant Publications for class 419 subclass 26][List of Patents for class 419 subclass 26]26 Subclass 26 indent level is 1 Post sintering operation
 [List of Pre Grant Publications for class 419 subclass 27][List of Patents for class 419 subclass 27]27 Subclass 27 indent level is 2 Impregnation
 [List of Pre Grant Publications for class 419 subclass 28][List of Patents for class 419 subclass 28]28 Subclass 28 indent level is 2 Subsequent working
 [List of Pre Grant Publications for class 419 subclass 29][List of Patents for class 419 subclass 29]29 Subclass 29 indent level is 2 Subsequent heat treatment (e.g., annealing, etc.)
[List of Pre Grant Publications for class 419 subclass 30][List of Patents for class 419 subclass 30]30 Subclass 30 indent level is 1 Powder pretreatment (prior to consolidation or sintering)
 [List of Pre Grant Publications for class 419 subclass 31][List of Patents for class 419 subclass 31]31 Subclass 31 indent level is 2 Heat treatment of powder
 [List of Pre Grant Publications for class 419 subclass 32][List of Patents for class 419 subclass 32]32 Subclass 32 indent level is 2 Mechanical blending
 [List of Pre Grant Publications for class 419 subclass 33][List of Patents for class 419 subclass 33]33 Subclass 33 indent level is 2 Comminuting
 [List of Pre Grant Publications for class 419 subclass 34][List of Patents for class 419 subclass 34]34 Subclass 34 indent level is 2 Chemical blending
 [List of Pre Grant Publications for class 419 subclass 35][List of Patents for class 419 subclass 35]35 Subclass 35 indent level is 2 Coating
[List of Pre Grant Publications for class 419 subclass 36][List of Patents for class 419 subclass 36]36 Subclass 36 indent level is 2 Addition of fugitive material
[List of Pre Grant Publications for class 419 subclass 38][List of Patents for class 419 subclass 38]38 Subclass 38 indent level is 1 Consolidation of powder prior to sintering
[List of Pre Grant Publications for class 419 subclass 39][List of Patents for class 419 subclass 39]39 Subclass 39 indent level is 2 Specific pressure or lack or pressure recited
 [List of Pre Grant Publications for class 419 subclass 41][List of Patents for class 419 subclass 41]41 Subclass 41 indent level is 2 Extruding
 [List of Pre Grant Publications for class 419 subclass 42][List of Patents for class 419 subclass 42]42 Subclass 42 indent level is 2 Isostatic or Hydrostatic
 [List of Pre Grant Publications for class 419 subclass 43][List of Patents for class 419 subclass 43]43 Subclass 43 indent level is 2 Rolling
 [List of Pre Grant Publications for class 419 subclass 44][List of Patents for class 419 subclass 44]44 Subclass 44 indent level is 1 Pretreatment of consolidated powders
 [List of Pre Grant Publications for class 419 subclass 45][List of Patents for class 419 subclass 45]45 Subclass 45 indent level is 1 Sintering which includes a chemical reaction
 [List of Pre Grant Publications for class 419 subclass 46][List of Patents for class 419 subclass 46]46 Subclass 46 indent level is 1 Alloying occurs during sintering
 [List of Pre Grant Publications for class 419 subclass 47][List of Patents for class 419 subclass 47]47 Subclass 47 indent level is 1 Liquid phase sintering
[List of Pre Grant Publications for class 419 subclass 48][List of Patents for class 419 subclass 48]48 Subclass 48 indent level is 1 Heat and pressure simultaneously to effect sintering
 [List of Pre Grant Publications for class 419 subclass 49][List of Patents for class 419 subclass 49]49 Subclass 49 indent level is 2 Hot isostatic pressing (HIP)
 [List of Pre Grant Publications for class 419 subclass 50][List of Patents for class 419 subclass 50]50 Subclass 50 indent level is 2 Hot rolling
 [List of Pre Grant Publications for class 419 subclass 51][List of Patents for class 419 subclass 51]51 Subclass 51 indent level is 2 Multiaxial (Not HIP)
 [List of Pre Grant Publications for class 419 subclass 52][List of Patents for class 419 subclass 52]52 Subclass 52 indent level is 2 Heating by electrical means other than radiant energy
[List of Pre Grant Publications for class 419 subclass 53][List of Patents for class 419 subclass 53]53 Subclass 53 indent level is 1 Plural heating steps including sintering
 [List of Pre Grant Publications for class 419 subclass 54][List of Patents for class 419 subclass 54]54 Subclass 54 indent level is 2 Different temperatures
 [List of Pre Grant Publications for class 419 subclass 55][List of Patents for class 419 subclass 55]55 Subclass 55 indent level is 2 Additional operation between heating steps
[List of Pre Grant Publications for class 419 subclass 56][List of Patents for class 419 subclass 56]56 Subclass 56 indent level is 1 Special medium during sintering
[List of Pre Grant Publications for class 419 subclass 57][List of Patents for class 419 subclass 57]57 Subclass 57 indent level is 2 Special atmosphere
[List of Pre Grant Publications for class 419 subclass 61][List of Patents for class 419 subclass 61]61 FORMING ARTICLES BY UNITING RANDOMLY ASSOCIATED METAL PARTICLES
[List of Pre Grant Publications for class 419 subclass 62][List of Patents for class 419 subclass 62]62 Subclass 62 indent level is 1 Powder pretreatment
 [List of Pre Grant Publications for class 419 subclass 63][List of Patents for class 419 subclass 63]63 Subclass 63 indent level is 2 Includes a chemical reaction
 [List of Pre Grant Publications for class 419 subclass 64][List of Patents for class 419 subclass 64]64 Subclass 64 indent level is 2 Includes coating of particles
 [List of Pre Grant Publications for class 419 subclass 65][List of Patents for class 419 subclass 65]65 Subclass 65 indent level is 2 Includes adding a binder material
[List of Pre Grant Publications for class 419 subclass 66][List of Patents for class 419 subclass 66]66 Subclass 66 indent level is 1 Consolidation of powders
 [List of Pre Grant Publications for class 419 subclass 67][List of Patents for class 419 subclass 67]67 Subclass 67 indent level is 2 Extrusion
 [List of Pre Grant Publications for class 419 subclass 68][List of Patents for class 419 subclass 68]68 Subclass 68 indent level is 2 Isostatic/Hydrostatic pressing
 [List of Pre Grant Publications for class 419 subclass 69][List of Patents for class 419 subclass 69]69 Subclass 69 indent level is 2 Rolling
 
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