Liquid detergent compositions for laundering colored fabrics
CA 2496527 A1 · Owner: The Procter & Gamble Company · Inventors: Brown, Marena Dessette; Rea, Fredric Barton; Fredj, Abdennaceur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid laundry detergent having improved color care properties when used to launder colored fabrics. The composition comprises an effective amount of a chlorine scavenger, a polymeric dye transfer inhibiting agent a detersive , surfactant, and is substantially free of triazinylaminostilbene optical brightener. Methods of using such compositions for cleaning colored fabric.
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 September 30, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 30, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 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.