Method of encapsulating biologically active materials in multilamellar lipid vesicles (mlv)
CA 1205383 A · Owner: Lipoderm Pharmaceuticals Limited · Inventors: Mezei, Michael; Nugent, Fredric J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides an improved procedure for producing large multilamellar lipid vesicles (MLV), which may be used to encapsulate a biologically active material, particularly lipophilic substances. According to this invention, a lipid film is formed on inert solid contact masses, within a vessel, by evaporating an organic solvent therefrom. Subsequent agitation in the presence of an aqueous liquid followed by a period in, which the vessel remains undisturbed yields the multilamellar vesicles. The procedure permits the encapsulation of both hydrophilic and lipophilic materials.
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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
- Granted June 3, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 3, 2003.
- 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.