Top IPC subclasses
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1
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B23H
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4
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Working of metal by the action of a high concentration of electric current on a workpiece using an electrode which takes the place of a tool; such working combined with other forms of working of metal
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2
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C23F
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3
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non-mechanical removal of metallic material from surfacesinhibiting corrosion of metallic materialin
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3
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C22C
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1
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alloys
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4
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H05B
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1
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electric heatingelectric lighting not otherwise provided for
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5
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B22F
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1
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working metallic powdermanufacture of articles from metallic powdermaking metallic powder
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6
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C25D
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1
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processes for the electrolytic or electrophoretic production of coatingselectroformingjoining workpi
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7
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C25B
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1
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Electrolytic or electrophoretic processes for the production of compounds or non- metals; apparatus therefor
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