US 7618976
Methods for the production of sildenafil base and citrate salt
granted A61KA61K31/519A61P
Quick answer
US patent 7618976 (Methods for the production of sildenafil base and citrate salt) held by TEVA PHARMACEUTICAL INDUSTRIES, LTD. expires Mon Nov 12 2029 00:00:00 GMT+0000 (Coordinated Universal Time). Status: granted.
Key facts
- Applicant
- TEVA PHARMACEUTICAL INDUSTRIES, LTD.
- Grant date
- Tue Nov 17 2009 00:00:00 GMT+0000 (Coordinated Universal Time)
- Expiration
- Mon Nov 12 2029 00:00:00 GMT+0000 (Coordinated Universal Time)
- Claims
- 28
- CPC classes
- A61K, A61K31/519, A61P, A61P15/10, A61P43/00