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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47/00
Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
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A61K47/50
the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
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A61K47/51
the non-active ingredient being a modifying agent
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A61K47/54
the modifying agent being an organic compound
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A61K47/55
the modifying agent being also a pharmacologically or therapeutically active agent, i.e. the entire conjugate being a codrug
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A61K47/551
one of the codrug's components being a vitamin, e.g. niacinamide, vitamin B3, cobalamin, vitamin B12, folate, vitamin A or retinoic acid
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