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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A61K47/69
the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit
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A61K47/6921
the form being a particulate, a powder, an adsorbate, a bead or a sphere
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A61K47/6927
the form being a solid microparticle having no hollow or gas-filled cores
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A61K47/6929
the form being a nanoparticle, e.g. an immuno-nanoparticle
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A61K47/6931
the material constituting the nanoparticle being a polymer
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A61K47/6933
the polymer being obtained by reactions only involving carbon to carbon, e.g. poly(meth)acrylate, polystyrene, polyvinylpyrrolidone or polyvinylalcohol
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