IPC Subgroup
A61K 31/39 having oxygen atoms in the same ring
Introduced: July 1974
Last revised: January 2006
Full Title
Medicinal preparations containing organic active ingredients > Heterocyclic compounds > having sulfur as a ring hetero atom > having oxygen atoms in the same ring
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- MEDICAL OR VETERINARY SCIENCE; HYGIENE
- Subclass:
- PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES