| Class Number |
Class Name |
No. of Patents |
| 373/60 |
Arc furnace device |
34 |
| 373/79 |
Charging or discharging |
69 |
| 373/83 |
Bottom pour |
19 |
| 373/84 |
Discharge by tilting |
49 |
| 373/81 |
Top charging |
61 |
| 373/82 |
Through electrode |
33 |
| 373/80 |
With charge pre-heating |
76 |
| 373/94 |
Electrode support |
57 |
| 373/97 |
For soderberg electrode (e.g., casing) |
22 |
| 373/98 |
Mast |
9 |
| 373/99 |
Crosshead |
13 |
| 373/95 |
Seal |
33 |
| 373/100 |
Slipping holder |
28 |
| 373/101 |
With electrical contact or terminal |
34 |
| 373/96 |
With electrode shield |
21 |
| 373/88 |
Electrode |
57 |
| 373/93 |
Composite (e.g., water cooled body with carbon tip) |
62 |
| 373/90 |
Non-consumable |
17 |
| 373/91 |
Sectional |
35 |
| 373/92 |
With means to join sections |
56 |
| 373/89 |
Self-baking (i.e., soderberg) |
40 |
| 373/85 |
For manipulation of the charge or melt (e.g., stirring) |
41 |
| 373/87 |
Crust breaking device |
6 |
| 373/86 |
Mechanical |
17 |
| 373/71 |
Furnace body detail |
54 |
| 373/72 |
Hearth or crucible |
139 |
| 373/73 |
Roof |
51 |
| 373/74 |
With cooling |
66 |
| 373/75 |
Sidewall |
33 |
| 373/76 |
With cooling |
90 |
| 373/77 |
With internal atmosphere control (e.g., pressure, vacuum, etc.) |
30 |
| 373/61 |
Indirect |
5 |
| 373/65 |
Arc between electrode and crucible exterior |
8 |
| 373/62 |
Arc between spaced electrodes |
20 |
| 373/63 |
Charge fed into space |
10 |
| 373/64 |
With arc deflection means |
12 |
| 373/66 |
Combined with or convertible to direct arc furnace |
8 |
| 373/67 |
Ingot remelting |
19 |
| 373/69 |
With electrode holder or guide |
15 |
| 373/68 |
With internal atmosphere control (e.g., pressure, vacuum, etc.) |
6 |
| 373/70 |
With power regulation |
23 |
| 373/78 |
Plural furnace units |
47 |
| 373/102 |
Power supply system |
65 |
| 373/103 |
Cable or cable suspension arrangement |
22 |
| 373/108 |
D.c. power |
126 |
| 373/107 |
With magnetically influenced arc |
26 |
| 373/104 |
With power regulation |
78 |
| 373/105 |
By changing arc length |
65 |
| 373/106 |
Using a hydraulic or pneumatic device |
13 |
| 373/10 |
Electron beam furnace device |
32 |
| 373/15 |
Ingot remelting |
9 |
| 373/11 |
Vaporizing furnace |
30 |
| 373/13 |
Gun assembly |
11 |
| 373/14 |
With deflection control |
24 |
| 373/12 |
Power supply and control circuit |
5 |
| 373/16 |
With plural beam devices |
8 |
| 373/17 |
Zone melting |
2 |
| 373/42 |
Electroslag remelting device |
29 |
| 373/44 |
Body detail |
8 |
| 373/45 |
Crucible |
22 |
| 373/51 |
Electrode replacement |
6 |
| 373/52 |
Electrode support |
24 |
| 373/53 |
Plural electrodes |
6 |
| 373/54 |
Electrode |
11 |
| 373/55 |
With protective shield |
5 |
| 373/43 |
Plural furnace units |
5 |
| 373/47 |
Power supply system |
13 |
| 373/48 |
Conductor arrangement |
8 |
| 373/49 |
Control |
11 |
| 373/50 |
By changing electrode position |
19 |
| 373/46 |
Start-up |
7 |
| 373/8 |
Environmental control |
50 |
| 373/9 |
Arc furnace |
95 |
| 373/27 |
Glass furnace device |
70 |
| 373/28 |
Filament discharge (i.e., bushing) |
35 |
| 373/29 |
Joule effect heating |
26 |
| 373/33 |
Charging or discharging |
42 |
| 373/34 |
Including batch pre-heating |
19 |
| 373/35 |
Including discharge area heating |
22 |
| 373/39 |
Electrical system |
25 |
| 373/41 |
Electrode arrangement (e.g., array) |
43 |
| 373/40 |
Regulation |
37 |
| 373/36 |
Electrode assembly |
44 |
| 373/38 |
Holder |
15 |
| 373/37 |
Protection means |
17 |
| 373/30 |
Furnace body detail |
45 |
| 373/31 |
Multi-chamber |
12 |
| 373/32 |
With heating between chambers |
23 |
| 373/26 |
Glow discharge furnace device |
7 |
| 373/138 |
Induction furnace device |
46 |
| 373/159 |
Core-type (i.e., channel) |
15 |
| 373/161 |
Channel |
21 |
| 373/162 |
Lining |
14 |
| 373/160 |
Coil |
15 |
| 373/165 |
Cooling |
9 |
| 373/163 |
Crucible or hearth |
17 |
| 373/164 |
Lining |
12 |
| 373/151 |
Coreless |
43 |
| 373/152 |
Coil |
31 |
| 373/154 |
Cooling |
23 |
| 373/153 |
Support |
28 |
| 373/158 |
Cooling |
25 |
| 373/156 |
Crucible |
81 |
| 373/157 |
Conducting (e.g., graphite) |
32 |
| 373/155 |
Lining |
43 |
| 373/142 |
For charging or discharging |
62 |
| 373/143 |
By tilting |
18 |
| 373/149 |
For furnace regulating |
10 |
| 373/150 |
Electrical |
18 |
| 373/145 |
Having condition signaling means |
17 |
| 373/144 |
Having plural heating elements |
20 |
| 373/147 |
Power supply system |
14 |
| 373/148 |
Regulating |
27 |
| 373/140 |
With internal atmosphere control (e.g., pressure, vacuum, etc.) |
26 |
| 373/141 |
Vacuum |
14 |
| 373/146 |
With means for manipulation of the charge or melt (e.g., stirring) |
34 |
| 373/139 |
Zone melting |
52 |
| 373/166 |
Miscellaneous |
13 |
| 373/18 |
Plasma furnace device |
108 |
| 373/22 |
Direct furnace (i.e., plasma flame impinges on the melt) |
86 |
| 373/25 |
Control system |
17 |
| 373/23 |
Expanded arc column |
12 |
| 373/24 |
Sidewall mounted plasmatron |
34 |
| 373/19 |
Indirect heating |
12 |
| 373/20 |
Rotary furnace |
28 |
| 373/21 |
Remelting furnace (i.e., ingot remelting) |
12 |
| 373/1 |
Plural diverse heating means |
17 |
| 373/2 |
Arc |
42 |
| 373/4 |
With induction |
6 |
| 373/3 |
With resistance |
6 |
| 373/7 |
Induction |
15 |
| 373/5 |
Resistance |
16 |
| 373/6 |
With induction |
5 |
| 373/109 |
Resistance furnace device |
51 |
| 373/115 |
Charging or discharging |
39 |
| 373/135 |
Control |
31 |
| 373/136 |
Temperature |
30 |
| 373/113 |
For cooling |
28 |
| 373/114 |
Terminal |
12 |
| 373/116 |
For manipulation of the charge or melt (e.g., stirring) |
18 |
| 373/137 |
Lining |
79 |
| 373/117 |
With heating element detail |
54 |
| 373/127 |
Having resistance encasement means |
36 |
| 373/134 |
Including resistor shape detail |
61 |
| 373/128 |
Mounting |
55 |
| 373/129 |
Base |
6 |
| 373/130 |
Side wall |
63 |
| 373/131 |
With resistor element compression |
3 |
| 373/132 |
Non-metallic resistor |
20 |
| 373/133 |
Rod-like |
23 |
| 373/120 |
Open circuit (e.g., charge internal resistance heating) |
48 |
| 373/122 |
Including crucible or hearth structure details |
31 |
| 373/125 |
Including terminal detail |
15 |
| 373/126 |
With axial bore |
0 |
| 373/121 |
Salt bath heating |
8 |
| 373/123 |
With preheating |
5 |
| 373/124 |
Including starting resistor |
2 |
| 373/118 |
Resistance crucible |
40 |
| 373/119 |
Wall contained |
36 |
| 373/110 |
With internal atmosphere control (e.g., pressure, vacuum, etc.) |
47 |
| 373/111 |
Having tubular charge containing or supporting element |
50 |
| 373/112 |
Vacuum |
38 |
| 373/56 |
With condensating device |
6 |
| 373/59 |
Including induction furnace detail |
9 |
| 373/57 |
Including resistance furnace detail |
7 |
| 373/58 |
With open circuit (i.e., charge internal resistance heating) |
3 |
