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Class Information
Number: 420
Name: Alloys or metallic compositions >
Description: STATEMENT OF CLASS SUBJECT MATTER










Class Number Class Name No. of Patents
420/400

Alkali metal base

31
420/415

Alkaline earth metal base

16
420/528

Aluminum base

237
420/554

Cadmium, lead, or bismuth containing

42
420/529

Copper containing

91
420/538

Iron, cobalt, or nickel containing

93
420/533

Magnesium containing

129
420/534

Silicon containing

148
420/536

Cadmium, lead or bismuth containing

13
420/535

Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing

160
420/537

Silicon containing

111
420/539

Silver containing

29
420/530

Tin containing

51
420/531

Zinc containing

34
420/532

Magnesium containing

154
420/550

Iron, cobalt, or nickel containing

130
420/551

Titanium, zirconium, hafnium, vanadium, noobium or tantalum containing

111
420/542

Magnesium containing

112
420/547

Iron, cobalt, or nickel containing

60
420/546

Silicon containing

99
420/543

Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing

90
420/545

Chromium containing

35
420/544

Silicon containing

80
420/548

Silicon containing

178
420/549

Alkali, or alkaline earth metal containing

66
420/552

Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing

138
420/553

Manganese containing

102
420/540

Zinc containing

61
420/541

Magnesium containing

71
420/576

Antimony base

31
420/579

Arsenic base or selenium or tellurium base alloy containing metal

53
420/401

Beryllium base

21
420/577

Bismuth base

40
420/525

Cadmium base

17
420/428

Chromium base

103
420/435

Cobalt base

222
420/436

Chromium containing

126
420/437

Aluminum containing

58
420/438

Titanium containing

30
420/440

Iron containing

79
420/439

Titanium containing

40
420/580

Containing over 50 per cent metal but no base metal

272
420/588

Chromium containing

194
420/587

Copper containing

160
420/581

Iron containing

191
420/583

Chromium containing

87
420/584.1

Nickel containing

164
420/585

Cobalt containing

94
420/586

Titanium, or zirconium containing

122
420/586.1

Molybdenum containing

152
420/582

Copper containing

123
420/589

Tin containing

85
420/469

Copper base

99
420/489

Aluminum, gallium, indium, or thallium containing

67
420/494

Beryllium, magnesium, or alkaline earth metal containing

48
420/498

Cadmium, or mercury containing

7
420/496

Iron or cobalt containing

53
420/491

Lead containing

24
420/493

Manganese containing

26
420/485

Nickel containing

91
420/486

Aluminum containing

52
420/487

Iron or manganese containing

73
420/488

Refractory metal containing

46
420/497

Noble metal containing

48
420/495

Other refractory metal containing

50
420/499

Phosphorus, arsenic, antimony, or bismuth containing

58
420/490

Silicon containing

47
420/500

Sulfur, selenium, or tellurium containing

36
420/470

Tin containing

63
420/471

Aluminum containing

42
420/473

Iron, manganese or nickel containing

100
420/474

Lead containing

23
420/475

Zinc containing

23
420/472

Phosphorus containing

78
420/476

Zinc containing

52
420/492

Titanium, zirconium or hafnium containing

78
420/477

Zinc containing

70
420/478

Aluminum containing

45
420/480

Manganese containing

38
420/479

Nickel containing

49
420/482

Manganese containing

25
420/481

Nickel containing

52
420/483

Noble metal containing

16
420/484

Refractory metal containing

19
420/8

Ferrous (i.e., iron base)

105
420/120

1.5 percent or more manganese containing, but less than 8 percent

68
420/9

1.7 percent or more carbon containing

41
420/13

2.7 percent or more carbon equivalent containing (i.e., cast iron)

42
420/14

Boron containing

16
420/15

Chromium containing

39
420/16

Nickel containing

24
420/17

Molybdenum containing

27
420/26

Copper containing

21
420/27

Nickel or molybdenum containing

38
420/28

Over .1 percent aluminum containing

15
420/18

Processes of adding magnesium

24
420/19

Adding magnesium as a liquid, vapor or as a solid agent entrained by gas (e.g., fluidized)

20
420/20

Flowing molten iron alloy onto solid magnesium containing agent, or adding solid magnesium containing agent to molten stream of iron alloy

32
420/25

In agent also containing silicon, rare earth, or alkaline earth metal

24
420/23

Magnesium containing agent is coated, impregnated, or compacted (e.g., briquetted, coated particles)

27
420/24

Magnesium present in agent only as a compound with a nonmetal

3
420/21

Mechanically plunging magnesium containing agent below surface of iron alloy melt

19
420/22

Separate addition of plural agents, at least one containing magnesium

19
420/29

Processes

31
420/30

Adding rare earth or alkaline earth metal

35
420/33

Adding silicon

28
420/31

Adding sulfur, selenium or tellurium

9
420/32

Adding vanadium, titanium, niobium, or zirconium

10
420/10

Six percent or more total group iv, v or vi transition metals containing

36
420/11

Eight percent or more chromium containing

23
420/12

Molybdenum, tungsten or vanadium containing

52
420/121

Boron containing

277
420/104

Chromium containing, but less than 9 percent

163
420/105

Molybdenum containing

88
420/106

Boron or beryllium containing

67
420/107

Cobalt containing

45
420/108

Nickel containing

71
420/109

Vanadium, titanium or zirconium containing

143
420/110

Titanium, zirconium or niobium containing

92
420/111

Vanadium containing

89
420/112

Nickel containing

74
420/113

Tungsten containing

21
420/115

Processes

15
420/116

Including reducing a chromium compound

5
420/114

Tungsten containing

29
420/89

Copper containing

65
420/90

Chromium containing

39
420/91

Nickel containing

59
420/92

Nickel containing

57
420/93

Vanadium, zirconium, titanium or molybdenum containing

32
420/72

Eight percent or more manganese containing

35
420/74

Chromium containing

51
420/76

Copper containing

8
420/73

Nickel containing

47
420/75

Titanium containing

20
420/77

Four percent or more aluminum containing

40
420/79

Chromium containing

52
420/80

Nickel or cobalt containing

24
420/78

Over 2 percent silicon containing

23
420/81

Zirconium, vanadium or titanium containing

27
420/84

Lead, bismuth, selenium, tellurium or calcium containing

121
420/85

Processes

27
420/86

Adding lead

13
420/123

Molybdneum containing

51
420/124

Vanadium, tantalum or titanium containing

36
420/119

Nickel containing, but 10 percent or less

93
420/34

Nine percent or more chromium containing

122
420/65

0.25 percent or more nitrogen containing

37
420/66

Group iv or v transition metal containing

22
420/64

Boron containing

66
420/36

Cobalt containing

41
420/37

Molybdenum or tungsten containing

39
420/39

Copper containing

14
420/38

Nickel containing

79
420/60

Copper containing

71
420/61

Molybdenum or tungsten containing

85
420/43

Eight percent or more nickel containing

94
420/49

Copper containing

63
420/54

Group iv or v transition metal containing

54
420/52

Molybdenum containing

79
420/53

Group iv or v transition metal containing

83
420/55

Over 0.1 percent carbon containing

27
420/50

Over 1.5 percent silicon containing

65
420/51

Group iv or v transition metal containing

36
420/44

Over 2 percent manganese containing

40
420/45

Copper containing

35
420/48

Group iv or v transition metal containing

31
420/46

Molybdenum or tungsten containing

51
420/47

Group iv or v transition metal containing

50
420/56

Eight percent or more total nickel plus manganese containing

72
420/58

Copper containing

43
420/57

Molybdenum or tungsten containing

88
420/59

Over 0.20 percent nitrogen containing

63
420/70

Group iv or v transition metal containing

92
420/41

Lead, bismuth, antimony, calcium, selenium or tellurium containing

72
420/67

Molybdenum or tungsten containing

97
420/68

Titanium, zirconium or hafnium containing

78
420/69

Vanadium, niobium or tantalum containing

124
420/35

Noble metal containing

26
420/42

Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability

82
420/62

Over 0.1 percent aluminum containing

64
420/63

Molybdenum or tungsten conaining

41
420/71

Processes

35
420/40

Rare earth containing

129
420/128

Nitrogen containinig

99
420/82

Noble metal containing

27
420/99

One percent or more carbon containing, but less than 1.7 percent

32
420/100

Chromium containing

33
420/101

Molybdenum containing

37
420/102

Cobalt containing

19
420/87

Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability

118
420/88

Processes of making or treating alloy containing over 0.04 percent phosphorus

18
420/103

Over 0.1 percent aluminum containing, but less than 4 percent

87
420/94

Over 10 percent nickel containing

75
420/97

Chromium containing

60
420/95

Cobalt containing

74
420/96

Molybdenum containing

49
420/98

Over 1 percent silicon containing

22
420/129

Processes

121
420/83

Rare earth metal containing

277
420/126

Titanium containing

111
420/122

Tungsten containing

36
420/117

Two percent or more silicon containing

134
420/118

Titanium, molybdenum, tungsten or vanadium containing

27
420/127

Vanadium, tantalum or niobium containing

125
420/125

Zirconium containing

41
420/555

Gallium, indium, or thallium base

76
420/556

Germanium base

22
420/507

Gold base

92
420/512

Iron, cobalt, or nickel containing

42
420/508

Palladium containing

61
420/509

Platinum containing

31
420/510

Platinum containing

33
420/511

Silver containing

47
420/900

Hydrogen storage

467
420/563

Lead base

32
420/564

Alkali, alkaline earth metal or magnesium containing

19
420/565

Tin containing

19
420/572

Antimony containing

17
420/567

Arsenic containing

4
420/568

Tin containing

3
420/569

Antimony containing

13
420/575

Cadmium containing

1
420/573

Copper containing

14
420/566

Silver containing

33
420/570

Tin containing

44
420/571

Antimony containing

23
420/574

Zinc containing

2
420/402

Magnesium base

83
420/407

Aluminum containing

62
420/410

Manganese containing

26
420/408

Zinc containing

43
420/409

Manganese containing

44
420/405

Lanthanide containing

45
420/406

Zirconium containing

24
420/413

Manganese containing

14
420/403

Silver containing

14
420/404

Manganese containing

2
420/411

Zinc containing

37
420/412

Manganese containing

16
420/414

Zirconium containing

10
420/434

Manganese base

64
420/526

Mercury base

34
420/527

Silver containing

30
420/591

Miscellaneous

12
420/429

Molybdenum base

94
420/441

Nickel base

169
420/460

Aluminum containing

103
420/442

Chromium containing

125
420/445

Aluminum containing

182
420/446

Titanium containing

60
420/450

Molybdenum or tungsten containing

69
420/447

Tantalum, niobium, vanadium, or hafnium containing

83
420/448

Molybdenum or tungsten containing

241
420/449

Zirconium or boron containing

90
420/452

Iron or manganese containing

93
420/453

Molybdenum or tungsten containing

106
420/454

Cobalt containing

55
420/444

Noble metal containing

46
420/443

Rare earth, magnesium or alkaline earth metal containing

198
420/451

Titanium containing

79
420/457

Copper containing

51
420/458

Iron containing

27
420/459

Iron or manganese containing

116
420/456

Noble metal containing

43
420/455

Rare earth containing

111
420/425

Niobium base

69
420/426

Titanium, zirconium, or hafnium containing

58
420/461

Osmium or iridium base

37
420/463

Palladium base

98
420/464

Copper containing

38
420/465

Platinum containing

19
420/466

Platinum base

95
420/468

Nickel containing

25
420/467

Rhodium containing

19
420/590

Processes

415
420/1

Radioactive

19
420/2

Actinide base; singly or in combination

10
420/3

Uranium base

25
420/7

Aluminum base

6
420/4

Iron base

4
420/5

Magnesium base

2
420/6

Nickel or cobalt base

3
420/416

Rare earth metal base singly or in combination

108
420/433

Rhenium base

27
420/462

Ruthenium or rhodium base

46
420/903

Semiconductive

40
420/578

Silicon base alloy containing metal

100
420/501

Silver base

89
420/502

Copper containing

82
420/503

Other noble metal containing

42
420/504

Zinc, or cadmium containing

42
420/505

Other noble metal containing

39
420/506

Zinc, or cadmium containing

18
420/901

Superconductive

78
420/902

Superplastic

80
420/427

Tantalum base

85
420/557

Tin base

111
420/562

Antimony, or bismuth containing

102
420/560

Copper containing

99
420/561

Antimony, or bismuth containing

87
420/558

Lead containing

27
420/559

Antimony, or bismuth containing

37
420/417

Titanium base

229
420/418

Aluminum containing

189
420/419

Tin containing

42
420/420

Vanadium containing

96
420/421

Chromium or molybdenum containing

154
420/430

Tungsten base

71
420/431

Carbon, boron or nitrogen containing

27
420/432

Rhenium or noble metal containing

19
420/424

Vanadium base

45
420/513

Zinc base

61
420/514

Aluminum containing

44
420/515

Copper containing

16
420/518

Manganese, iron, cobalt, or nickel containing

10
420/516

Mangesium containing

18
420/517

Tin containing

4
420/519

Magnesium containing

19
420/520

Manganese, iron, cobalt, or nickel containing

15
420/523

Cadmium containing

9
420/521

Copper containing

7
420/522

Manganese, iron, cobalt, or nickel containing

2
420/524

Tin containing

11
420/422

Zirconium or hafnium base

205
420/423

Copper containing

38
 
 
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