Fabric softening compositions containing pentaerythritol esters, bentonite and polyphosphonate
CA 2345119 A1 · Owner: Crutzen, Andre · Inventors: Wouters, France; Crutzen, Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A biodegradable fabric softening composition or article is provided for softening laundry and is essentially free of a quaternary ammonium compound softener. The composition or article comprises a clay carrier a defined , polyphosphonate compound, and a defined PEC which is a fabric softening compound selected from among esters of pentaerythritol oligomers of , pentaerythritol or alkylene oxide derivatives of such esters and oligomers.
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 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 23, 2021.
- 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.