Peroxygen bleach-containing compositions comprising a particular chelating agent system
CA 2305565 A1 · Owner: Raso, Floriana · Inventors: Silvaggi, Lorena; Raso, Floriana
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 compositions comprising a peroxygen bleach a , chelating agent having a mobility factor greater or equal to 0.7 and a chelating agent having a mobility lower than 0.6 characterised in that the , weight ratio of the chelating agent having a mobility factor greater or equal to 0.7 to the chelating agent having a mobility factor lower than 0.6 is of more than 1:1. These compositions are particularly suitable for the cleansing of carpets, resulting in effective overall stains removal performance for example on particulate stains and/or greasy/oil and/or bleachable stains and/or enzymatic stains while proving improved colour fidelity.
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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 September 25, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 25, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2020.
- 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.