Treatment for substrates
CA 2443446 C · Owner: Findlay, Paul Hugh · Inventors: Jones, Christopher Clarkson; Kukulj, Dax; Ferguson, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water-dispersible particle wherein the material comprises (i) one or more polymeric deposition materials having an average repeat unit (I): wherein at least one or more R groups of the polymer are independently selected from H a , hydrolysable group or a linker group in which when R is a hydrolysable group the degree of substitution is 0 to 3 and when R is a linker group the degree of substitution is 0.01 to 3; (ii) a benefit agent attached to the deposition enhancing part;characterised in that the water-dispersible particle has a particle size from 20 to 5,000 nm.
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 July 25, 2002 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2024.
- 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.