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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31/00
Medicinal preparations containing organic active ingredients
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A61K31/662
Phosphorus acids or esters thereof having P—C bonds, e.g. foscarnet, trichlorfon
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A61K31/663
Compounds having two or more phosphorus acid groups or esters thereof, e.g. clodronic acid, pamidronic acid
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