• All sections
• A - Human necessities
• A61K - Preparations for medical, dental or toiletry purposes
• A61K 31/439 - Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom the ring forming part of a bridged ring system, e.g. quinuclidine

Patent holdings for IPC class A61K 31/439

Total number of patents in this class: 2181

10-year publication summary

Principal owners for this class