Fabric softening compositions
CA 2257202 C · Owner: The Procter & Gamble Company · Inventors: Baker, Ellen Schmidt; Hubesch, Bruno Albert Jean; Hartman, Frederick Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to fabric softening compositions and methods thereof which effectively reduces the amount of dyes released from coloured fabrics upon wet treatment, said composition comprising one or more cationic fabric softener components having at least two long chains one or more , dispersible polyolefins and one or more cationic dye fixing agents.
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 June 2, 1997 and granted March 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 2, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2019.
- 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.