Nucleic acid-containing complex
CA 2389506 A1 · Owner: Tabata, Yasuhiko · Inventors: Fukuyama, Naoto; Mori, Hidezo; Tabata, Yasuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nucleic acid-containing complex, containing a nucleic acid and a biodegradable polymer, especially a positively-charged water-insoluble biodegradable polymer, is disclosed. The complex has excellent properties of sustainedly releasing a desired nucleic acid especially DNA, to a site in , need of a treatment. Since the complex can be taken up to phagocytes such as macrophages and delivered specifically to the target site the function of the , nucleic acid can be exhibited in a target site specific manner and thus more , specific gene therapy can be achieved. The complex has no adverse effects such as occurrence of recombinants or toxicity which could be caused by using a virus vector …
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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 November 9, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 9, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 2022.
- 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.