Formation of stable liposomes from lipid extracts of archaeobacteria (archaea)
CA 2122638 C · Owner: Ekiel, Irena · Inventors: Sprott, G. Dennis; Choquet, Christian G.; Patel, Girishchandra B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel ether lipids were obtained from methanogenic (Methanospirillum hungatei, Methanococcus jannaschii, Methanococcus voltae. Methanosarcina mazei and Methanobrevibacter smithii), and extremely halophilic (Halobacterium cutirubrum) representatives of the archaeobacteria. Several of the ether lipids produced by Methanospirillum and Methanosarcina genera were purified and characterized structurally for the first time. Unilamellar liposomes were prepared from emulsions of the total polar-ether lipid extracts of such bacteria by pressure extrusion through membranes of various pore sizes. Liposome populations were shown by dynamic light scattering and electron microscopy to range in size …
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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 23, 1992 and granted May 8, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2014.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.