US 7723432
Method for the preparation of 1-benzotriazolyl carbonate esters of poly(ethylene glycol)
granted A61KA61K31/7088A61K47/58
Quick answer
US patent 7723432 (Method for the preparation of 1-benzotriazolyl carbonate esters of poly(ethylene glycol)) held by Nektar Therapeutics expires Mon May 20 2030 00:00:00 GMT+0000 (Coordinated Universal Time). Status: granted.
Key facts
- Applicant
- Nektar Therapeutics
- Grant date
- Tue May 25 2010 00:00:00 GMT+0000 (Coordinated Universal Time)
- Expiration
- Mon May 20 2030 00:00:00 GMT+0000 (Coordinated Universal Time)
- Claims
- 22
- CPC classes
- A61K, A61K31/7088, A61K47/58, A61K47/60, A61K47/6901