Polymers and their use in laundry compositions
CA 2446376 C · Owner: Jones, Christopher Clarkson · Inventors: Jones, Christopher Clarkson; Findlay, Paul Hugh; Kukulj, Dax
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A substituted polysaccharide comprising .szlig.1-4 linkages having covalently bonded on the polysaccharide moiety thereof at least one deposition enhancing , group which undergoes a chemical change in water at a use temperature to increase the affinity of the substituted polysaccharide to a substrate the , substituted polysaccharide further comprising one or more independently selected silicone chains.
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 August 19, 2002 and granted July 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 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.