Spherical compacted unit dose softener
CA 2473794 A1 · Owner: Cao, Hoai-Chau · Inventors: Cao, Hoai-Chau; Jacques, Alain; Rousselet, Juliette
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A unit dose laundry composition for softening or conditioning fabrics which is suitable as an additive to the wash cycle of an automatic washing machine said unit dose composition comprising a compacted granular composition comprising a fabric softener or a fabric conditioner said compacted granular , composition being characterized by having a spherical shape and having no discrete outer layer surrounding said fabric softener or conditioner which , outer layer is comprised of an alkaline material such that the pH of the wash water is increased upon the dissolution of said outer layer in said wash water.
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 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2025.
- 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.