Process for the preparation of glucosamine salts
CA 2470665 C · Owner: Mis Vizcaino, Ricard · Inventors: Alaez Verson, Carlos Raul; Vila Pahi, Francisco Javier; Torrent Gibert, Ana Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a process for the preparation of glucosamine sulphate or glucosamine hydroiodide or glucosamine pyruvate or glucosamine phosphate, or mixtures thereof with glucosamine hydrochloride by electrodialysis. , Starting from glucosamine hydrochloride the exchange of the Cl- anion for an , anion selected from the group consisting of SO4 2- I-, CH3COCOO- and PO4 3- takes , place during the process. The electrodialysis process is carried out in an electrodialyzer or , stack of electrodialyses formed by at least a cathode, anode and a means of separation, composed of anion and cation exchange membranes. The product obtained is suitable to be used in oral injectable or …
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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 December 13, 2002 and granted February 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 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
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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.