Multilamellar liposomes having improved trapping efficiencies
CA 1297014 C · Owner: Janoff, Andrew S. · Inventors: Cullis, Pieter R.; Bally, Marcel B.; Janoff, Andrew S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multilamellar vesicle dispersed in an aqueous phase comprising an aqueous medium, a lipid concentration of at least about 50 mg/ml and a trapping efficiency of at least about 30 percent. The vehicle can be prepared by dispersing the lipid in an aqueous phase to form a multilamellar vesicle, rapidly freezing the multilamellar vesicle to obtain a frozen lipid-aqueous medium mixture and warming, the mixture to obtain a frozen and thawed multilamellar vesicle dispersed in an aqueous phase.
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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 March 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 2009.
- 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.