Surfactant mixtures combining cleaning effectiveness with gentleness to skin
CA 2003517 A1 · Owner: Mueller, Reinhard · Inventors: Mueller, Reinhard; Wisotzki, Klaus-Dieter; Giede, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Surface-active aqueous compositions containing fatty alcohol ether sulfates and at least one other anionic surfactant from the group of fatty alcohol ether tartrates and fatty alcohol ether citrates, in which the fatty alcohol ether sulfates and the other anionic surfactants mentioned are present in a quantitative ratio of 70:30 to 1:99 and, which also contain from 0.01 to 3% by weight of alkaline earth metal ions, based on the composition as a whole are, distinguished by high skin compatibility high cleaning, effectiveness, and good foaming.
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 November 21, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2011.
- 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.