Microparticular pharmaceutical compositions
CA 2175494 C · Owner: Cho, Young W. · Inventors: Cho, Young W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pharmaceutical composition comprises microparticles in micell. The microparticles contain at least one pharmaceutically-active agent at least , one water soluble or miscible phospholipid at least one lipid soluble or , miscible phospholipid at least one non-ionic surfactant having an HLB value of about 15 or greater, at least one non-ionic surfactant having an HLB value of about or less, and at least one water soluble or miscible sterol compound. The microparticles are suspended in at least one fatty acid having a chain length of C14 or less. The composition may optionally contain at least one fatty acid having a chain length of C16 or greater in a concentration of about 5 w/v % or …
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 November 3, 1994 and granted September 19, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 2016.
- 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.