Top IPC subclasses
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1
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C07F
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2
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acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
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2
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C09K
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2
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materials for applications not otherwise provided forapplications of materials not otherwise provide
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3
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C07D
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1
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Heterocyclic compounds
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4
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C07C
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1
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Acyclic or carbocyclic compounds
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5
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C12R
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1
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Indexing scheme associated with subclasses C12C-C12Q, relating to micro-organisms
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6
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C12N
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1
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Micro-organisms or enzymes; compositions thereof; propagating, preserving, or maintaining micro-organisms; mutation or genetic engineering; culture media
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