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Expired Canadian patentCanada

Pharmaceutical composition with antiviral or antitumor activity

CA 1295944 C · Owner: Sauer, Gerhard · Inventors: Sauer, Gerhard; Amtmann, Eberhard; Hummel, Klaus W.

CIPO record

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Abstract From the Canadian patent

The invention refers to antiviral and antitumor compositions which are useful for the control of viruses and tumors and which, in addition to a known antiviral or antitumor active xanthate, contain an adjuvant which increases its antiviral and antitumor action. The adjuvant is an ionic, preferably an anionic, compound with a lipophilic group and a hydrophilic group preferably an, alkali metal deoxycholate or a compound the lipophilic moiety of which is a straight or branched saturated or, unsaturated, aliphatic group with six to eighteen carbon atoms, and the hydrophilic group of which has one or two carboxyl, sulphate, sulphonate, or phosphate groups or a, pharmaceutically-acceptable salt …

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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 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 30, 1986
GrantedFebruary 18, 1992
Term endedFebruary 18, 2009
Patent numberCA 1295944 C
Classification (IPC)A61K31/26 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJuly 30, 1986Patent grantedFeb 18, 1992Term endedFeb 18, 2009

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