A
HUMAN NECESSITIES
A61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61K
PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
A61K9/00
Medicinal preparations characterised by special physical form
A61K9/14
Particulate form, e.g. powders,; Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
A61K9/16
Agglomerates; Granulates; Microbeadlets; ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
A61K9/167
with an outer layer or coating comprising drug; with chemically bound drugs or non-active substances on their surface