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Classification Resources
 
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 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 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 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 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 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 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 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 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 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 61][List of Patents for class 419 subclass 61]61 FORMING ARTICLES BY UNITING RANDOMLY ASSOCIATED METAL PARTICLES
 
FOREIGN ART COLLECTIONS
 
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United States Patent and Trademark Office