Granular fabric softener compositions which form aqueous emulsion concentrates
CA 2108907 A1 · Owner: The Procter & Gamble Company · Inventors: Hartman, Frederick A.; Taylor, Lucille F.; Rusche, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A granular fabric softening composition which can be added to, water to form an aqueous concentrated emulsion comprising nonionic, fabric softener, preferably a fatty alkyl ester of a polyhydric alcohol, and a mono-long-chain alkyl cationic surfactant. In particular, the use of a sorbitan ester with a mono-long-chain alkyl cationic surfactant provides a granular softening agent which can be used to form a highly dispersed, concentrated aqueous, composition which, when added to e.g. a rinse cycle of a typical, washing process effectively deposits onto fabric from the aqueous bath.
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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 April 14, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2014.
- 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.