Compositions for delivery of biological agents and methods for the preparation thereof
CA 2294334 A1 · Owner: The Moscow State University · Inventors: Kabonov, Victor A.; Kabanov, Alexander V.; Eisenberg, Adi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition for facilitating delivery of biological agents comprising a , supramolecular complex including as constituents a block copolymer having at , least one nonionic, water soluble segment and at least one polyionic segment and at least one charged surfactant having hydrophobic groups the charge of , the surfactant being opposite to that of the polyionic segment of the block copolymer. The constituents of the complex are bound by interaction between the opposite charges thereof and between surfactant hydrophobic groups. The complex may include an anionic surfactant having a biological activity in , which case the net charge of such anionic surfactant is no more than about 10.
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 June 11, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 11, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2020.
- 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.