Liquid, free-flowing and pumpable tenside concentrate
CA 2084655 A1 · Owner: Giesen, Brigitte · Inventors: Syldath, Andreas; Giesen, Brigitte
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, The concentrates consist essentially of 35 to 55% by weight water, 10 to 30% by weight of an alkyl glycoside corresponding to the formula R1-O(G)n, in which R1 is a C8-22 alkyl radical, G is a glycose unit and n is a number of 1 to lo, 10 to 30% by weight of an alkyl sulfate corresponding to the formula R2-O-SO3X, in which R2 is a C8-22 alkyl radical and X is an alkali or ammonium ion and 1 to 15% by, weight of an alkane sulfonate corresponding to the formula (III), in which R3 and R4 independently of one another represent C1-18 alkyl radicals, with the proviso that the total number of carbon atoms in the alkane sulfonate is between 10 and 20, and Y is an alkali or ammonium ion. …
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 May 27, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 27, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2013.
- 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.