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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51/00
Preparations containing radioactive substances for use in therapy or testing in vivo
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A61K51/12
characterised by a special physical form, e.g. emulsion, microcapsules, liposomes; , characterized by a special physical form, e.g. emulsions, dispersions, microcapsules
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A61K51/1241
particles, powders, lyophilizates, adsorbates, e.g. polymers or resins for adsorption or ion-exchange resins
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A61K51/1244
microparticles or nanoparticles, e.g. polymeric nanoparticles
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A61K51/1251
micro- or nanospheres, micro- or nanobeads, micro- or nanocapsules
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