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Expired Canadian patentCanada

Pharmaceutical composition containing sodium alginate

CA 1083964 A · Owner: Reckitt And Colman Products Limited · Inventors: Withington, Roger

CIPO record

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Abstract From the Canadian patent

A, "PHARMACEUTICAL COMPOSITIONS" Abstract of the Disclosure, A pharmaceutical composition for the suppression of gastric reflux comprising a low viscosity grade sodium alginate for which the viscosity of a 1% aqueous solution when determined on, a Brookfield viscometer model RVT using spindle No 1 at 20 r.p.m. at 25°C is within the range of from 3 to 60 centipoise from, 0.16 to 2.60 parts by weight of sodium bicarbonate per part by weight of sodium alginate and from 0.10 to 1.04 parts by weight of calcium carbonate per part by weight of sodium alginate. The composition may be in the form of a dry powder or tablet or in liquid form. A particularly preferred composition in liquid form …

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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 August 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 16, 1977
GrantedAugust 19, 1980
Term endedAugust 19, 1997
Patent numberCA 1083964 A
Classification (IPC)A61K31/70 +1 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedAug 16, 1977Patent grantedAug 19, 1980Term endedAug 19, 1997

Sources & verification

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