Glucosamine sulfate metal chloride compositions and processes of preparation thereof
CA 2332312 A1 · Owner: Chopdekar, Vilas M. · Inventors: Schleck, James R.; Chopdekar, Vilas M.; Burger, Christopher M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Glucosamine compositions comprising the compounds glucosamine sulfate metal chloride, wherein the metal, i.e. the cation is potassium sodium, magnesium, zinc, lithium or manganese. The compounds have purity levels of at least about 97 %, with water present in a maximum amount of about 10 wt.% based on the , weight of the composition. The compounds are prepared by contacting glucosamine hydrochloride with the metal sulfate in the presence of water to form an aqueous solution of glucosamine sulfate metal chloride and thereafter freeze-drying the solution at a temperature and at a reduced pressure for such period of time that at least about 90 wt.% of the water is removed and …
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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 May 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2021.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.