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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9/00
Medicinal preparations characterised by special physical form
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A61K9/20
Pills, tablets,; discs, rods
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A61K9/2072
characterised by shape, structure or size; Tablets with holes, special break lines or identification marks; Partially coated tablets; Disintegrating flat shaped forms
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A61K9/2086
Layered tablets, e.g. bilayer tablets; Tablets of the type inert core-active coat
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A61K9/209
containing drug in at least two layers or in the core and in at least one outer layer
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