Method for emulsifying heat-sensitive silicone emulsion without grinding
CA 2383874 A1 · Owner: Durand, Nicolas · Inventors: Mercier, Jean-Michel; Durand, Nicolas; Maze, Herve
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for emulsifying without grinding, a silicone in water in the presence of a surfactant at a temperature less than 60 ·C and under shearing at less than 100 s?-1¿ comprising steps which consist in: a) preparing a primary oil-in-water emulsion including said surfactant and said silicone under shearing at less than 100 s?-1¿ by adding an aqueous phase to an oily phase comprising said silicone the proportion of oily phase in the primary emulsion being less than the maximum proportion p¿max? above which the addition of the aqueous phase to the oily phase does not enable the preparation of an oil-in-water emulsion and the weight ratio of surfactant to water in the …
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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 August 18, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2022.
- 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.