US Patent Class 420
ALLOYS OR METALLIC COMPOSITIONS



Electronic
File
Wrappers

Electronic
Patent
Documents

Paper
Patent
Documents

Current as of: June, 1999
Click for Main Headings
Click DF for Definitions
Click for All Classes

Internet Version by PATENTEC © 1999       Terms of Use



Products
and
Services

  DF  CLASS NOTES
1  DF  RADIOACTIVE
2  DF  .~ Actinide base; singly or in combination
3  DF  .~.~ Uranium base
4  DF  .~ Iron base
5  DF  .~ Magnesium base
6  DF  .~ Nickel or cobalt base
7  DF  .~ Aluminum base
8  DF  FERROUS (I.E., IRON BASE)
9  DF  .~ 1.7 percent or more carbon containing
10  DF  .~.~ Six percent or more total group IV, V or VI transition metals containing
11  DF  .~.~.~ Eight percent or more chromium containing
12  DF  .~.~.~.~ Molybdenum, tungsten or vanadium containing
13  DF  .~.~ 2.7 percent or more carbon equivalent containing (i.e., cast iron)
14  DF  .~.~.~ Boron containing
15  DF  .~.~.~ Chromium containing
16  DF  .~.~.~.~ Nickel containing
17  DF  .~.~.~.~.~ Molybdenum containing
18  DF  .~.~.~ Processes of adding magnesium
19  DF  .~.~.~.~ Adding magnesium as a liquid, vapor or as a solid agent entrained by gas (e.g., fluidized)
20  DF  .~.~.~.~ Flowing molten iron alloy onto solid magnesium containing agent, or adding solid magnesium containing agent to molten stream of iron alloy
21  DF  .~.~.~.~ Mechanically plunging magnesium containing agent below surface of iron alloy melt
22  DF  .~.~.~.~ Separate addition of plural agents, at least one containing magnesium
23  DF  .~.~.~.~ Magnesium containing agent is coated, impregnated, or compacted (e.g., briquetted, coated particles)
24  DF  .~.~.~.~ Magnesium present in agent only as a compound with a nonmetal
25  DF  .~.~.~.~ In agent also containing silicon, rare earth, or alkaline earth metal
26  DF  .~.~.~ Copper containing
27  DF  .~.~.~ Nickel or molybdenum containing
28  DF  .~.~.~ Over .1 percent aluminum containing
29  DF  .~.~.~ Processes
30  DF  .~.~.~.~ Adding rare earth or alkaline earth metal
31  DF  .~.~.~.~ Adding sulfur, selenium or tellurium
32  DF  .~.~.~.~ Adding vanadium, titanium, niobium, or zirconium
33  DF  .~.~.~.~ Adding silicon
34  DF  .~ Nine percent or more chromium containing
35  DF  .~.~ Noble metal containing
36  DF  .~.~ Cobalt containing
37  DF  .~.~.~ Molybdenum or tungsten containing
38  DF  .~.~.~.~ Nickel containing
39  DF  .~.~.~.~ Copper containing
40  DF  .~.~ Rare earth containing
41  DF  .~.~ Lead, bismuth, antimony, calcium, selenium or tellurium containing
42  DF  .~.~ Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability
43  DF  .~.~ Eight percent or more nickel containing
44  DF  .~.~.~ Over 2 percent manganese containing
45  DF  .~.~.~.~ Copper containing
46  DF  .~.~.~.~ Molybdenum or tungsten containing
47  DF  .~.~.~.~.~ Group IV or V transition metal containing
48  DF  .~.~.~.~ Group IV or V transition metal containing
49  DF  .~.~.~ Copper containing
50  DF  .~.~.~ Over 1.5 percent silicon containing
51  DF  .~.~.~.~ Group IV or V transition metal containing
52  DF  .~.~.~ Molybdenum containing
53  DF  .~.~.~.~ Group IV or V transition metal containing
54  DF  .~.~.~ Group IV or V transition metal containing
55  DF  .~.~.~ Over 0.1 percent carbon containing
56  DF  .~.~ Eight percent or more total nickel plus manganese containing
57  DF  .~.~.~ Molybdenum or tungsten containing
58  DF  .~.~.~ Copper containing
59  DF  .~.~.~ Over 0.20 percent nitrogen containing
60  DF  .~.~ Copper containing
61  DF  .~.~.~ Molybdenum or tungsten containing
62  DF  .~.~ Over 0.1 percent aluminum containing
63  DF  .~.~.~ Molybdenum or tungsten conaining
64  DF  .~.~ Boron containing
65  DF  .~.~ 0.25 percent or more nitrogen containing
66  DF  .~.~.~ Group IV or V transition metal containing
67  DF  .~.~ Molybdenum or tungsten containing
68  DF  .~.~.~ Titanium, zirconium or hafnium containing
69  DF  .~.~.~ Vanadium, niobium or tantalum containing
70  DF  .~.~ Group IV or V transition metal containing
71  DF  .~.~ Processes
72  DF  .~ Eight percent or more manganese containing
73  DF  .~.~ Nickel containing
74  DF  .~.~ Chromium containing
75  DF  .~.~ Titanium containing
76  DF  .~.~ Copper containing
77  DF  .~ Four percent or more aluminum containing
78  DF  .~.~ Over 2 percent silicon containing
79  DF  .~.~ Chromium containing
80  DF  .~.~ Nickel or cobalt containing
81  DF  .~.~ Zirconium, vanadium or titanium containing
82  DF  .~ Noble metal containing
83  DF  .~ Rare earth metal containing
84  DF  .~ Lead, bismuth, selenium, tellurium or calcium containing
85  DF  .~.~ Processes
86  DF  .~.~.~ Adding lead
87  DF  .~ Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability
88  DF  .~.~ Processes of making or treating alloy containing over 0.04 percent phosphorus
89  DF  .~ Copper containing
90  DF  .~.~ Chromium containing
91  DF  .~.~.~ Nickel containing
92  DF  .~.~ Nickel containing
93  DF  .~.~ Vanadium, zirconium, titanium or molybdenum containing
94  DF  .~ Over 10 percent nickel containing
95  DF  .~.~ Cobalt containing
96  DF  .~.~ Molybdenum containing
97  DF  .~.~ Chromium containing
98  DF  .~.~ Over 1 percent silicon containing
99  DF  .~ One percent or more carbon containing, but less than 1.7 percent
100  DF  .~.~ Chromium containing
101  DF  .~.~.~ Molybdenum containing
102  DF  .~.~.~.~ Cobalt containing
103  DF  .~ Over 0.1 percent aluminum containing, but less than 4 percent
104  DF  .~ Chromium containing, but less than 9 percent
105  DF  .~.~ Molybdenum containing
106  DF  .~.~.~ Boron or beryllium containing
107  DF  .~.~.~ Cobalt containing
108  DF  .~.~.~ Nickel containing
109  DF  .~.~.~.~ Vanadium, titanium or zirconium containing
110  DF  .~.~.~ Titanium, zirconium or niobium containing
111  DF  .~.~.~ Vanadium containing
112  DF  .~.~ Nickel containing
113  DF  .~.~.~ Tungsten containing
114  DF  .~.~ Tungsten containing
115  DF  .~.~ Processes
116  DF  .~.~.~ Including reducing a chromium compound
117  DF  .~ Two percent or more silicon containing
118  DF  .~.~ Titanium, molybdenum, tungsten or vanadium containing
119  DF  .~ Nickel containing, but 10 percent or less
120  DF  .~ 1.5 percent or more manganese containing, but less than 8 percent
121  DF  .~ Boron containing
122  DF  .~ Tungsten containing
123  DF  .~ Molybdneum containing
124  DF  .~.~ Vanadium, tantalum or titanium containing
125  DF  .~ Zirconium containing
126  DF  .~ Titanium containing
127  DF  .~ Vanadium, tantalum or niobium containing
128  DF  .~ Nitrogen containinig
129  DF  .~ Processes
400  DF  ALKALI METAL BASE
401  DF  BERYLLIUM BASE
402  DF  MAGNESIUM BASE
403  DF  .~ Silver containing
404  DF  .~.~ Manganese containing
405  DF  .~ Lanthanide containing
406  DF  .~.~ Zirconium containing
407  DF  .~ Aluminum containing
408  DF  .~.~ Zinc containing
409  DF  .~.~.~ Manganese containing
410  DF  .~.~ Manganese containing
411  DF  .~ Zinc containing
412  DF  .~.~ Manganese containing
413  DF  .~ Manganese containing
414  DF  .~ Zirconium containing
415  DF  ALKALINE EARTH METAL BASE
416  DF  RARE EARTH METAL BASE SINGLY OR IN COMBINATION
417  DF  TITANIUM BASE
418  DF  .~ Aluminum containing
419  DF  .~.~ Tin containing
420  DF  .~.~ Vanadium containing
421  DF  .~ Chromium or molybdenum containing
422  DF  ZIRCONIUM OR HAFNIUM BASE
423  DF  .~ Copper containing
424  DF  VANADIUM BASE
425  DF  NIOBIUM BASE
426  DF  .~ Titanium, zirconium, or hafnium containing
427  DF  TANTALUM BASE
428  DF  CHROMIUM BASE
429  DF  MOLYBDENUM BASE
430  DF  TUNGSTEN BASE
431  DF  .~ Carbon, boron or nitrogen containing
432  DF  .~ Rhenium or noble metal containing
433  DF  RHENIUM BASE
434  DF  MANGANESE BASE
435  DF  COBALT BASE
436  DF  .~ Chromium containing
437  DF  .~.~ Aluminum containing
438  DF  .~.~.~ Titanium containing
439  DF  .~.~ Titanium containing
440  DF  .~.~ Iron containing
441  DF  NICKEL BASE
442  DF  .~ Chromium containing
443  DF  .~.~ Rare earth, magnesium or alkaline earth metal containing
444  DF  .~.~ Noble metal containing
445  DF  .~.~ Aluminum containing
446  DF  .~.~.~ Titanium containing
447  DF  .~.~.~.~ Tantalum, niobium, vanadium, or hafnium containing
448  DF  .~.~.~.~.~ Molybdenum or tungsten containing
449  DF  .~.~.~.~ Zirconium or boron containing
450  DF  .~.~.~.~ Molybdenum or tungsten containing
451  DF  .~.~ Titanium containing
452  DF  .~.~ Iron or manganese containing
453  DF  .~.~.~ Molybdenum or tungsten containing
454  DF  .~.~.~.~ Cobalt containing
455  DF  .~ Rare earth containing
456  DF  .~ Noble metal containing
457  DF  .~ Copper containing
458  DF  .~.~ Iron containing
459  DF  .~ Iron or manganese containing
460  DF  .~ Aluminum containing
461  DF  OSMIUM OR IRIDIUM BASE
462  DF  RUTHENIUM OR RHODIUM BASE
463  DF  PALLADIUM BASE
464  DF  .~ Copper containing
465  DF  .~ Platinum containing
466  DF  PLATINUM BASE
467  DF  .~ Rhodium containing
468  DF  .~ Nickel containing
469  DF  COPPER BASE
470  DF  .~ Tin containing
471  DF  .~.~ Aluminum containing
472  DF  .~.~ Phosphorus containing
473  DF  .~.~ Iron, manganese or nickel containing
474  DF  .~.~ Lead containing
475  DF  .~.~.~ Zinc containing
476  DF  .~.~ Zinc containing
477  DF  .~ Zinc containing
478  DF  .~.~ Aluminum containing
479  DF  .~.~.~ Nickel containing
480  DF  .~.~.~ Manganese containing
481  DF  .~.~ Nickel containing
482  DF  .~.~ Manganese containing
483  DF  .~.~ Noble metal containing
484  DF  .~.~ Refractory metal containing
485  DF  .~ Nickel containing
486  DF  .~.~ Aluminum containing
487  DF  .~.~ Iron or manganese containing
488  DF  .~.~ Refractory metal containing
489  DF  .~ Aluminum, gallium, indium, or thallium containing
490  DF  .~ Silicon containing
491  DF  .~ Lead containing
492  DF  .~ Titanium, zirconium or hafnium containing
493  DF  .~ Manganese containing
494  DF  .~ Beryllium, magnesium, or alkaline earth metal containing
495  DF  .~ Other refractory metal containing
496  DF  .~ Iron or cobalt containing
497  DF  .~ Noble metal containing
498  DF  .~ Cadmium, or mercury containing
499  DF  .~ Phosphorus, arsenic, antimony, or bismuth containing
500  DF  .~ Sulfur, selenium, or tellurium containing
501  DF  SILVER BASE
502  DF  .~ Copper containing
503  DF  .~.~ Other noble metal containing
504  DF  .~.~ Zinc, or cadmium containing
505  DF  .~ Other noble metal containing
506  DF  .~ Zinc, or cadmium containing
507  DF  GOLD BASE
508  DF  .~ Palladium containing
509  DF  .~.~ Platinum containing
510  DF  .~ Platinum containing
511  DF  .~ Silver containing
512  DF  .~ Iron, cobalt, or nickel containing
513  DF  ZINC BASE
514  DF  .~ Aluminum containing
515  DF  .~.~ Copper containing
516  DF  .~.~.~ Mangesium containing
517  DF  .~.~.~ Tin containing
518  DF  .~.~.~ Manganese, iron, cobalt, or nickel containing
519  DF  .~.~ Magnesium containing
520  DF  .~.~ Manganese, iron, cobalt, or nickel containing
521  DF  .~ Copper containing
522  DF  .~.~ Manganese, iron, cobalt, or nickel containing
523  DF  .~ Cadmium containing
524  DF  .~ Tin containing
525  DF  CADMIUM BASE
526  DF  MERCURY BASE
527  DF  .~ Silver containing
528  DF  ALUMINUM BASE
529  DF  .~ Copper containing
530  DF  .~.~ Tin containing
531  DF  .~.~ Zinc containing
532  DF  .~.~.~ Magnesium containing
533  DF  .~.~ Magnesium containing
534  DF  .~.~.~ Silicon containing
535  DF  .~.~.~.~ Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing
536  DF  .~.~.~.~ Cadmium, lead or bismuth containing
537  DF  .~.~ Silicon containing
538  DF  .~.~ Iron, cobalt, or nickel containing
539  DF  .~.~ Silver containing
540  DF  .~ Zinc containing
541  DF  .~.~ Magnesium containing
542  DF  .~ Magnesium containing
543  DF  .~.~ Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing
544  DF  .~.~.~ Silicon containing
545  DF  .~.~.~ Chromium containing
546  DF  .~.~ Silicon containing
547  DF  .~.~ Iron, cobalt, or nickel containing
548  DF  .~ Silicon containing
549  DF  .~.~ Alkali, or alkaline earth metal containing
550  DF  .~ Iron, cobalt, or nickel containing
551  DF  .~.~ Titanium, zirconium, hafnium, vanadium, noobium or tantalum containing
552  DF  .~ Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing
553  DF  .~.~ Manganese containing
554  DF  .~ Cadmium, lead, or bismuth containing
555  DF  GALLIUM, INDIUM, OR THALLIUM BASE
556  DF  GERMANIUM BASE
557  DF  TIN BASE
558  DF  .~ Lead containing
559  DF  .~.~ Antimony, or bismuth containing
560  DF  .~ Copper containing
561  DF  .~.~ Antimony, or bismuth containing
562  DF  .~ Antimony, or bismuth containing
563  DF  LEAD BASE
564  DF  .~ Alkali, alkaline earth metal or magnesium containing
565  DF  .~.~ Tin containing
566  DF  .~ Silver containing
567  DF  .~ Arsenic containing
568  DF  .~.~ Tin containing
569  DF  .~.~.~ Antimony containing
570  DF  .~ Tin containing
571  DF  .~.~ Antimony containing
572  DF  .~ Antimony containing
573  DF  .~ Copper containing
574  DF  .~ Zinc containing
575  DF  .~ Cadmium containing
576  DF  ANTIMONY BASE
577  DF  BISMUTH BASE
578  DF  SILICON BASE ALLOY CONTAINING METAL
579  DF  ARSENIC BASE OR SELENIUM OR TELLURIUM BASE ALLOY CONTAINING METAL
580  DF  CONTAINING OVER 50 PER CENT METAL BUT NO BASE METAL
581  DF  .~ Iron containing
582  DF  .~.~ Copper containing
583  DF  .~.~ Chromium containing
584.1  DF  .~.~.~ Nickel containing
585  DF  .~.~.~.~ Cobalt containing
586  DF  .~.~.~.~.~ Titanium, or zirconium containing
586.1  DF  .~.~.~.~ Molybdenum containing
587  DF  .~ Copper containing
588  DF  .~ Chromium containing
589  DF  .~ Tin containing
590  DF  PROCESSES
591  DF  MISCELLANEOUS
******************************
CROSS-REFERENCE ART COLLECTIONS
******************************
900  DF  HYDROGEN STORAGE
901  DF  SUPERCONDUCTIVE
902  DF  SUPERPLASTIC
903  DF  SEMICONDUCTIVE