Delivery of nucleic acid material to target cells in biological systems
CA 2271006 A1 · Owner: Ulbrich, Karel · Inventors: Schacht, Etienne Honore; Ulbrich, Karel; Seymour, Leonard Charles William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Synthetic polymer-based carrier vehicles for delivery of nucleic acid material to target cells in biological systems are made by self-assembly of the nucleic acid with cationic polymer material so as to condense the nucleic acid and form a polyelectrolyte complex. This complex is then reacted with reactive hydrophilic polymer material which bonds to the complex forming a hydrophilic coating that stabilises the complex and provides an outer protective steric shield. These carrier vehicles can be useful in gene therapy.
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 November 6, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2019.
- 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.