Top IPC subclasses
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1
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B23H
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13
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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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C10M
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6
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lubricating compositionsuse of chemical substances either alone or as lubricating ingredients in a l
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3
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H05H
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4
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plasma techniqueproduction of accelerated electrically- charged particles or of neutronsproduction o
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4
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C30B
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3
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single-crystal growthunidirectional solidification of eutectic material or unidirectional demixing o
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5
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C10N
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1
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indexing scheme associated with subclass
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