Polymeric microemulsions
CA 2483282 C · Owner: Arien, Albertina Maria Eduarda · Inventors: Brewster, Marcus Eli; Preat, Veronique; Arien, Albertina Maria Eduarda
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides novel self-emulsifying diblock copolymers and novel self-emulsifying compositions comprising an active ingredient and a diblock copolymer characterized in that the diblock copolymer is liquid at a temperature below 50~C and the composition is non-aqueous and liquid at a temperature below 50~C.
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 April 24, 2003 and granted May 29, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2025.
- 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.