Liposome composition
CA 1287581 C · Owner: Iga, Katsumi · Inventors: Ogawa, Yasuaki; Hamaguchi, Naoru; Iga, Katsumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
24205-696, Abstract of The Disclosure, Liposome compositions in which a drug is retained in stable condition are prepared by dispersing liposomes obtained by removal of a solvent from a drug-containing w/o emulsion in an aqueous solvent having an osmotic pressure higher by at least 20 percent than the osmotic pressure of a solution used for entrapping the drug in said liposomes. These composition is conducive to a sustained therapeutic efficacy or a better delivery of the drug to a target organ.
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
- Granted August 13, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 2008.
- 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.