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Expired Canadian patentCanada

Method of industrial preparation of tris (hydroxymethyl)-aminomethangluconatohydroxo-aluminate

CA 1049544 A · Owner: Scharper S.P.A. Per L'Industria Farmaceutica · Inventors: Fazzini, Massimo

CIPO record

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Abstract From the Canadian patent

A method for the industrial preparation of tris (hydroxymethyl)-aminomethan-gluconato-dihydroxo-aluminate con-, sisting in first reacting D-gluconic acid with aluminium isopropylate and then reacting the aluminium gluconate produced with tris (hydroxymethyl)-aminomethane. The product obtained can be used as an antiacid, due to its high neutralizing capacity per unit weight.

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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

  • Granted February 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 27, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 27, 1979
Term endedFebruary 27, 1996
Patent numberCA 1049544 A
Classification (IPC)C07F5/06 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedFeb 27, 1979Term endedFeb 27, 1996

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.