Compositions for removing finishing agents containing silicone oil, aqueous dispersions prepared therefrom and their use
CA 2128159 A1 · Owner: Wickert, Nicolai · Inventors: Tostmann, Rainer; Gehling, Matthias; Pfeiffer, Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions for removing finishing agents containing silicone oil, aqueous dispersions prepared therefrom and their use, A b s t r a c t, Compositions for removing finishing agents containing silicone oil contain, as essential component a, surfactant carrying cationic groups on the surfactant framework structure; these surfactants can be amphoteric surfactants or betaine surfactants. These compositions can furthermore contain acids non-ionic, surfactants, water-soluble non-ionic polymers and solvents (free of halogenated hydrocarbons). Aqueous dispersions in the form of concentrates (as commercial products) or in the form of dilute liquors directly usable in the washing process can be …
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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 July 15, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 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.