Speciality surfactants used as dye transfer inhibition agents
CA 2332740 A1 · Owner: Goldschmidt Chemical Company · Inventors: Watts, Michelle M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surfactant blend which is capable of functioning as a dye transfer inhibiting agent and as a cleaning agent in laundry detergents comprising a blend of at least two amine oxides and at least one cleaning agent selected from betaines, sultaines and mixtures thereof, said amine oxides being present in an amount of from about 50 to about 99 weight percent and said at least one cleaning agent being present in an amount of from about 1 to about 50 weight percent with the proviso, that no polymeric dye transfer inhibition agent such as PVD is present. The surfactant blend may further contain one or more amphoteric surfactants which can be added to the surfactant blend as an additional component …
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 January 30, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 2023.
- 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.