Liquid laundry detergent
CA 2207609 A1 · Owner: Liimatta, Eric W. · Inventors: Hu, Patrick C.; Liimatta, Eric W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stable zeolite-containing liquid detergents requiring no viscosity-reducing polymer in order to have a viscosity <= 1000 mPa.s are aqueous surfactantstructured detergents comprising (A) 5-45 % by weight of suspended zeolite particles, (B) 10-30 % by weight of an alkylbenzene sulfonate/nonionic surfactant admixture in which (1) the nonionic component of the admixture is an ethoxylate of an alcohol or an alkylphenol or a mixture thereof with an amine oxide, (2) the alkylbenzene sulfonate/nonionic surfactant weight ratio is in the range of 0.5-10/1, (3) the amine oxide/ethoxylate weight ratio is in the range of 0-4/1, and (4) the amine oxide/alkylbenzene sulfonate weight ratio is in …
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 December 15, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2016.
- 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.