Patent classifications
A
HUMAN NECESSITIES
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A61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
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A61K
PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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2800/00
Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
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A61K2800/20
Chemical, physico-chemical or functional or structural properties of the composition as a whole
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A61K2800/30
Characterized by the absence of a particular group of ingredients
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