Fabric treatment composition
CA 2003493 C · Owner: Unilever Plc · Inventors: Haq, Zia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid aqueous fabric-treatment composition comprising a water-insoluble, cationic fabric-conditioning material and a fabric-substantive hydrocarbon material characterized in that the weight ratio of water-insoluble, cationic material to hydrocarbon material is between 1:4 and 1:10, and wherein the total level of water-insoluble, cationic material and hydrocarbon material is more than 12% of the composition.
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 21, 1989 and granted January 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2011.
- 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.