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
A61K31/55
having seven-membered rings, e.g. azelastine, pentylenetetrazole
Load children Filter patents View analytics View as hierarchy
A61K31/554
having at least one nitrogen and one sulfur as ring hetero atoms, e.g. clothiapine, diltiazem
Filter patents View analytics View as hierarchy