Top IPC subclasses
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1
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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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2
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A01N
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2
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Preservation of bodies of humans or animals or plants or parts thereof; biocides, e.g. as disinfectants, as pesticides or as herbicides; pest repellants or attractants; plant growth regulators
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3
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C01B
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1
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non-metallic elementscompounds thereof
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4
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C01G
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1
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Compounds containing metals not covered by subclasses C01D or C01F
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