Composition and method for bleaching a substrate
CA 2383596 A1 · Owner: Veerman, Simon Marinus · Inventors: Veerman, Simon Marinus; Hage, Ronald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a liquid bleaching composition for catalytically bleaching substrates, especially laundry fabrics with atmospheric oxygen or , air. A liquid bleaching composition is provided comprising an organic substance which forms a complex with a transition metal the complex , catalysing bleaching of a substrate by atmospheric oxygen and a liquid , carrier or solvent, wherein the composition is substantially devoid of peroxygen bleach or a peroxy-based or -generating bleach system. Also provided is a method of bleaching a substrate comprising applying the liquid bleaching composition to the substrate. Also provided is a method of treating a textile by contacting the …
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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 August 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 2022.
- 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.