Heterovesicular liposomes
CA 2078666 C · Owner: Kim, Sinil · Inventors: Kim, Sinil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are heterovesicular liposomes containing different biological compositions (14, 14a) each encapsulated in separate chambers of the liposomes, having defined size distribution adjustable , internal chamber size and number methods of mak-, ing them and treatment of patients with them. The preparation process includes the addition of composition to first lipid component in the vial to obtain an emulsion the addition of composition to second lipid component in the vial to obtain a second emulsion and mixing these emulsions to form a chimeric emulsion.
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 March 20, 1991 and granted October 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2013.
- 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.