Top IPC subclasses
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1
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B01D
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1
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Separation
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2
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A61Q
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1
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use of cosmetics or similar toilet preparations
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3
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A61K
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1
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Preparations for medical, dental, or toilet purposes
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4
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C09B
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1
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organic dyes or closely-related compounds for producing dyesmordantslakes
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5
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A23L
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1
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Foods, foodstuffs, or non-alcoholic beverages, not covered by subclasses A21D or A23B-A23J; their preparation or treatment, e.g. cooking, modification of nutritive qualities, physical treatment; preservation of foods or foodstuffs, in general
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