Method for preparing a composition containing at least an internal dehydrating product of a hydrogenated sugar
CA 2466935 C · Owner: Roquette Freres · Inventors: Fuertes, Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a novel method for preparing a composition for internal dehydration of a hydrogenated sugar characterized in that it comprises: a) a step which consists in distillation of a medium containing said internal dehydration product to obtain a distillate enriched with said product; b) optionally at least a subsequent step which consists in purifying the resulting distillate; c) a subsequent step which consists in bringing said distillate obtained at step a) optionally subjected to step b), in the presence of an agent capable of enhancing the stability of the internal dehydration product contained for the major part in the distillate said agent not being in gaseous form; d) …
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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 November 18, 2002 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2024.
- 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.