US 6992168
Sterically hindered poly(ethylene glycol) alkanoic acids and derivatives thereof
expired A61KA61K47/60
Quick answer
US patent 6992168 (Sterically hindered poly(ethylene glycol) alkanoic acids and derivatives thereof) held by Nektar Therapeutics AL, Corporation expires Mon Jan 26 2026 00:00:00 GMT+0000 (Coordinated Universal Time). Status: expired.
Key facts
- Applicant
- Nektar Therapeutics AL, Corporation
- Grant date
- Tue Jan 31 2006 00:00:00 GMT+0000 (Coordinated Universal Time)
- Expiration
- Mon Jan 26 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
- Claims
- 24
- CPC classes
- A61K, A61K47/60