Solubilising polysaccharides substituted with hydrophilic and hydrophobic groups
CA 2499686 C · Owner: Stewart, Ailsa · Inventors: Schatzlein, Andreas; Stewart, Ailsa; Uchegbu, Ijeoma
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to novel carbohydrate polymers with hydrophobic and hydrophilic side-groups suitable for solubilising for example, hydrophobic , drugs. The chain length of the carbohydrate polymeric backbone and the type , and number of the hydrophobic and hydrophilic side-groups are specifically chosen to improve the solubility properties of the carbohydrate polymers.
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 September 22, 2003 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 2025.
- 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.