Patent classifications
A
HUMAN NECESSITIES
Load children
A61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
Load children
A61K
PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
Load children
31/00
Medicinal preparations containing organic active ingredients
Load children Filter patents View analytics View as hierarchy
A61K31/395
having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
Load children Filter patents View analytics View as hierarchy
A61K31/40
having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
Load children Filter patents View analytics View as hierarchy
A61K31/4015
having oxo groups directly attached to the heterocyclic ring, e.g. piracetam, ethosuximide
Filter patents View analytics View as hierarchy