Polyarginine-modified liposome having nuclear entry ability
CA 2540917 C · Owner: Futaki, Shiroh · Inventors: Kogure, Kentaro; Harashima, Hideyoshi; Futaki, Shiroh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
With the object of providing a liposome having cellular and nuclear entry ability, to achieve this object a liposome , is provided having on its surface a peptide comprising multiple consecutive arginine residues and specifically a , liposome is provided wherein the peptide is modified with a hydrophobic group or hydrophobic compound and the hydrophobic group or hydrophobic compound is inserted into a lipid bilayer so that the peptide is exposed on the surface of the bilayer.
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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 October 1, 2004 and granted March 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 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.