🇺🇸 FDA
Patent

US 8455653

Hydroxy-6-heteroarylphenanthridines and their use as PDE4 inhibitors

granted A61KA61K31/473A61K31/4985

Quick answer

US patent 8455653 (Hydroxy-6-heteroarylphenanthridines and their use as PDE4 inhibitors) held by TAKEDA GMBH expires Mon May 30 2033 00:00:00 GMT+0000 (Coordinated Universal Time). Status: granted.

Key facts

Applicant
TAKEDA GMBH
Grant date
Tue Jun 04 2013 00:00:00 GMT+0000 (Coordinated Universal Time)
Expiration
Mon May 30 2033 00:00:00 GMT+0000 (Coordinated Universal Time)
Claims
6
CPC classes
A61K, A61K31/473, A61K31/4985, A61K31/501, A61K31/506