Method for preparing functionalized polymers from polymer alcohols
CA 2533702 C · Owner: Nektar Therapeutics · Inventors: Mcmanus, Samuel P.; Harris, J. Milton; Kozlowski, Antoni
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides, among other things methods for preparing , functionalized and other polymers from polymer alcohols such as poly(ethylene glycol)s. In addition, polymer compositions conjugates, polymeric reagents, are also provided.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 22, 2004 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.