High di(alkyl fatty ester) quaternary ammonium compound from triethanol amine
CA 2253536 A1 · Owner: Iacobucci, Paul Albert · Inventors: Iacobucci, Paul Albert; Franklin, Ralph; Trinh, Phuong-Nga
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention generally relates to a textile softening composition which comprises, as the softening agent a quaternary ammonium salt which , comprises a mixture of monodi- and tri-ester components, wherein the amount of diester quaternary is greater than about 55 % by weight and the amount of , triester quaternary is less than about 25 % by weight based on the total amount of quaternary ammonium salt. The invention also relates to a process for preparing said softening agent.
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 April 25, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 25, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2019.
- 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.