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Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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Class 420 | ALLOYS OR METALLIC COMPOSITIONS |
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1 | RADIOACTIVE |
2 | Actinide base; singly or in combination |
4 | Iron base |
5 | Magnesium base |
6 | Nickel or cobalt base |
7 | Aluminum base |
8 | FERROUS (I.E., IRON BASE) |
9 | 1.7 percent or more carbon containing |
10 | Six percent or more total group IV, V or VI transition metals containing |
13 | 2.7 percent or more carbon equivalent containing (i.e., cast iron) |
14 | Boron containing |
15 | Chromium containing |
18 | Processes of adding magnesium |
19 | Adding magnesium as a liquid, vapor or as a solid agent entrained by gas (e.g., fluidized) |
20 | Flowing molten iron alloy onto solid magnesium containing agent, or adding solid magnesium containing agent to molten stream of iron alloy |
21 | Mechanically plunging magnesium containing agent below surface of iron alloy melt |
22 | Separate addition of plural agents, at least one containing magnesium |
23 | Magnesium containing agent is coated, impregnated, or compacted (e.g., briquetted, coated particles) |
24 | Magnesium present in agent only as a compound with a nonmetal |
25 | In agent also containing silicon, rare earth, or alkaline earth metal |
26 | Copper containing |
27 | Nickel or molybdenum containing |
28 | Over .1 percent aluminum containing |
29 | Processes |
34 | Nine percent or more chromium containing |
35 | Noble metal containing |
36 | Cobalt containing |
40 | Rare earth containing |
41 | Lead, bismuth, antimony, calcium, selenium or tellurium containing |
42 | Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability |
43 | Eight percent or more nickel containing |
44 | Over 2 percent manganese containing |
45 | Copper containing |
46 | Molybdenum or tungsten containing |
48 | Group IV or V transition metal containing |
49 | Copper containing |
50 | Over 1.5 percent silicon containing |
52 | Molybdenum containing |
54 | Group IV or V transition metal containing |
55 | Over 0.1 percent carbon containing |
56 | Eight percent or more total nickel plus manganese containing |
60 | Copper containing |
62 | Over 0.1 percent aluminum containing |
64 | Boron containing |
65 | 0.25 percent or more nitrogen containing |
67 | Molybdenum or tungsten containing |
70 | Group IV or V transition metal containing |
71 | Processes |
72 | Eight percent or more manganese containing |
77 | Four percent or more aluminum containing |
78 | Over 2 percent silicon containing |
79 | Chromium containing |
80 | Nickel or cobalt containing |
81 | Zirconium, vanadium or titanium containing |
82 | Noble metal containing |
83 | Rare earth metal containing |
84 | Lead, bismuth, selenium, tellurium or calcium containing |
87 | Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability |
89 | Copper containing |
90 | Chromium containing |
92 | Nickel containing |
93 | Vanadium, zirconium, titanium or molybdenum containing |
94 | Over 10 percent nickel containing |
95 | Cobalt containing |
96 | Molybdenum containing |
97 | Chromium containing |
98 | Over 1 percent silicon containing |
99 | One percent or more carbon containing, but less than 1.7 percent |
103 | Over 0.1 percent aluminum containing, but less than 4 percent |
104 | Chromium containing, but less than 9 percent |
105 | Molybdenum containing |
106 | Boron or beryllium containing |
107 | Cobalt containing |
108 | Nickel containing |
110 | Titanium, zirconium or niobium containing |
111 | Vanadium containing |
112 | Nickel containing |
114 | Tungsten containing |
115 | Processes |
117 | Two percent or more silicon containing |
119 | Nickel containing, but 10 percent or less |
120 | 1.5 percent or more manganese containing, but less than 8 percent |
121 | Boron containing |
122 | Tungsten containing |
123 | Molybdneum containing |
125 | Zirconium containing |
126 | Titanium containing |
127 | Vanadium, tantalum or niobium containing |
128 | Nitrogen containinig |
129 | Processes |
400 | ALKALI METAL BASE |
401 | BERYLLIUM BASE |
402 | MAGNESIUM BASE |
403 | Silver containing |
405 | Lanthanide containing |
407 | Aluminum containing |
411 | Zinc containing |
413 | Manganese containing |
414 | Zirconium containing |
415 | ALKALINE EARTH METAL BASE |
416 | RARE EARTH METAL BASE SINGLY OR IN COMBINATION |
417 | TITANIUM BASE |
422 | ZIRCONIUM OR HAFNIUM BASE |
424 | VANADIUM BASE |
425 | NIOBIUM BASE |
427 | TANTALUM BASE |
428 | CHROMIUM BASE |
429 | MOLYBDENUM BASE |
430 | TUNGSTEN BASE |
433 | RHENIUM BASE |
434 | MANGANESE BASE |
435 | COBALT BASE |
441 | NICKEL BASE |
442 | Chromium containing |
443 | Rare earth, magnesium or alkaline earth metal containing |
444 | Noble metal containing |
445 | Aluminum containing |
451 | Titanium containing |
452 | Iron or manganese containing |
455 | Rare earth containing |
456 | Noble metal containing |
457 | Copper containing |
459 | Iron or manganese containing |
460 | Aluminum containing |
461 | OSMIUM OR IRIDIUM BASE |
462 | RUTHENIUM OR RHODIUM BASE |
463 | PALLADIUM BASE |
466 | PLATINUM BASE |
469 | COPPER BASE |
470 | Tin containing |
471 | Aluminum containing |
472 | Phosphorus containing |
473 | Iron, manganese or nickel containing |
474 | Lead containing |
476 | Zinc containing |
477 | Zinc containing |
478 | Aluminum containing |
481 | Nickel containing |
482 | Manganese containing |
483 | Noble metal containing |
484 | Refractory metal containing |
485 | Nickel containing |
489 | Aluminum, gallium, indium, or thallium containing |
490 | Silicon containing |
491 | Lead containing |
492 | Titanium, zirconium or hafnium containing |
493 | Manganese containing |
494 | Beryllium, magnesium, or alkaline earth metal containing |
495 | Other refractory metal containing |
496 | Iron or cobalt containing |
497 | Noble metal containing |
498 | Cadmium, or mercury containing |
499 | Phosphorus, arsenic, antimony, or bismuth containing |
500 | Sulfur, selenium, or tellurium containing |
501 | SILVER BASE |
507 | GOLD BASE |
508 | Palladium containing |
510 | Platinum containing |
511 | Silver containing |
512 | Iron, cobalt, or nickel containing |
513 | ZINC BASE |
514 | Aluminum containing |
521 | Copper containing |
523 | Cadmium containing |
524 | Tin containing |
525 | CADMIUM BASE |
526 | MERCURY BASE |
528 | ALUMINUM BASE |
529 | Copper containing |
530 | Tin containing |
531 | Zinc containing |
533 | Magnesium containing |
537 | Silicon containing |
538 | Iron, cobalt, or nickel containing |
539 | Silver containing |
540 | Zinc containing |
542 | Magnesium containing |
543 | Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing |
546 | Silicon containing |
547 | Iron, cobalt, or nickel containing |
548 | Silicon containing |
550 | Iron, cobalt, or nickel containing |
552 | Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing |
554 | Cadmium, lead, or bismuth containing |
555 | GALLIUM, INDIUM, OR THALLIUM BASE |
556 | GERMANIUM BASE |
557 | TIN BASE |
563 | LEAD BASE |
564 | Alkali, alkaline earth metal or magnesium containing |
566 | Silver containing |
567 | Arsenic containing |
570 | Tin containing |
572 | Antimony containing |
573 | Copper containing |
574 | Zinc containing |
575 | Cadmium containing |
576 | ANTIMONY BASE |
577 | BISMUTH BASE |
578 | SILICON BASE ALLOY CONTAINING METAL |
579 | ARSENIC BASE OR SELENIUM OR TELLURIUM BASE ALLOY CONTAINING METAL |
580 | CONTAINING OVER 50 PER CENT METAL BUT NO BASE METAL |
581 | Iron containing |
587 | Copper containing |
588 | Chromium containing |
589 | Tin containing |
590 | PROCESSES |
591 | MISCELLANEOUS |
CROSS-REFERENCE ART COLLECTIONS | ||
900 | HYDROGEN STORAGE |
901 | SUPERCONDUCTIVE |
902 | SUPERPLASTIC |
903 | SEMICONDUCTIVE |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
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