Softening compositions
CA 2000481 A1 · Owner: Donkers, Annemieke C. M. · Inventors: Sheppard, Julie H.; Donkers, Annemieke C. M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid rinse cycle softener composition comprises up to 50% by weight of (A) an organic cationic compound which is substantive to water rinse on textile fibres from 0.01 to 5% by, weight (B) a silicone foam controlling agent comprising a liquid polydiorganosiloxane and solid hydrophobic filler particles and (C) a nonionic or cationic surfactant capable of emulsifying at, least to some extent, the silicone foam controlling agent. Component (C) is preferably present in a weight ratio of component (B) to component (C) from 1/1 to 1/5 and is preferably a polydiorganosiloxane oxyalkylene copolymer. A method of treating textile fabrics by applying the compositions is also claimed.
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 October 11, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 11, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2011.
- 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.