Complexes of the peptidoglycan monomer (pgm) with trivalent metals, process for the manufacture thereof and their use
CA 2133087 A1 · Owner: Vajtner, Zlatko · Inventors: Naumski, Radmila; Vajtner, Zlatko; Suskovic, Bozidar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to complexes of the peptidoglycan monomer (PGM) of formula (I) with trivalent metals such as e.g. aluminum, lanthanum, vanadium and rhodium (except iron and bismuth) to a , process for their preparation as well as to their use as immunomodulators in pharmaceutical preparations. According to this invention the complexation reaction of the peptidoglycan monomer is performed in an aqueous solution in the presence of salts of trivalent metals upon correction of the pH of the solution with alkalies, the concentration, and the addition of an organic solvent which is miscible with water and precipitates the product.
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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 April 1, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2014.
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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.