Carbohydrate-modified polymers, compositions and uses related thereto
CA 2476769 A1 · Owner: Pun, Suzie Hwang · Inventors: Cheng, Jianjun; Davis, Mark E.; Bellocq, Nathalie C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This application discloses compositions of carbohydrate-modified polymers such as polyethylenimine modified with cyclodextrin moieties for carrying , drugs and other active agents such as nucleic acids. Compositions are also disclosed of carbohydrate-modified polymer carriers that release such agents under controlled conditions. The invention also discloses compositions of carbohydrate-modified polymer carriers that are coupled to biorecognition molecules for targeting the delivery of drugs to their site of action.
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 February 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 24, 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.