Top IPC subclasses
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1
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C01G
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4
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Compounds containing metals not covered by subclasses C01D or C01F
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2
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C01F
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2
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compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium
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3
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C04B
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2
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Lime; magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone; ceramics; refractories; treatment of natural stone
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4
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B25H
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1
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workshop equipment, e.g. for marking-out workstorage means for workshops
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5
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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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6
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C30B
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1
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single-crystal growthunidirectional solidification of eutectic material or unidirectional demixing o
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7
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H05K
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1
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printed circuitscasings or constructional details of electric apparatusmanufacture of assemblages of
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