• All sections
• A - Human necessities
• A61K - Preparations for medical, dental or toiletry purposes
• A61K 31/40 - Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil

Patent holdings for IPC class A61K 31/40

Total number of patents in this class: 5279

10-year publication summary

Principal owners for this class