Low cost fabric softeners for rinse cycle using triglyceride based ester quats
CA 2344918 A1 · Owner: Kohle, Hans-Jurgen · Inventors: Kohle, Hans-Jurgen; Keys, Robert O.; Friedli, Floyd E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved rinse cycle fabric softener concentrate and formulation that comprises a blend of the following quaternary ammonium compounds about 1 to about 50 weight % of at least anionic scavenger; and about 50 to about 99 weight % of at least one triglyceride-based ester goat. The triglyceride-based ester goat is produced by reacting a vegetable and/or animal based fatty oil with an alkanol amine and thereafter quaternizing the ester amine in the presence of an alkylating 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 24, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 24, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2023.
- 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.