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Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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Class 419 | POWDER METALLURGY PROCESSES |
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1 | POWDER METALLURGY PROCESSES WITH HEATING OR SINTERING |
2 | Making porous product |
3 | Making articles of indefinite length |
5 | Making composite or hollow article |
10 | Metal and nonmetal in final product |
11 | Nonmetal is elemental carbon |
12 | Boride containing |
13 | Nitride containing |
14 | Carbide containing |
19 | Oxide containing |
23 | Powder shape or size characteristics |
25 | Controlled cooling after sintering |
26 | Post sintering operation |
30 | Powder pretreatment (prior to consolidation or sintering) |
31 | Heat treatment of powder |
32 | Mechanical blending |
33 | Comminuting |
34 | Chemical blending |
35 | Coating |
36 | Addition of fugitive material |
38 | Consolidation of powder prior to sintering |
39 | Specific pressure or lack or pressure recited |
41 | Extruding |
42 | Isostatic or Hydrostatic |
43 | Rolling |
44 | Pretreatment of consolidated powders |
45 | Sintering which includes a chemical reaction |
46 | Alloying occurs during sintering |
47 | Liquid phase sintering |
48 | Heat and pressure simultaneously to effect sintering |
49 | Hot isostatic pressing (HIP) |
50 | Hot rolling |
51 | Multiaxial (Not HIP) |
52 | Heating by electrical means other than radiant energy |
53 | Plural heating steps including sintering |
56 | Special medium during sintering |
61 | FORMING ARTICLES BY UNITING RANDOMLY ASSOCIATED METAL PARTICLES |
62 | Powder pretreatment |
63 | Includes a chemical reaction |
64 | Includes coating of particles |
65 | Includes adding a binder material |
66 | Consolidation of powders |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
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