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Expired Canadian patentCanada

Steroidal liposomes

CA 1262334 C · Owner: The Liposome Company, Inc. · Inventors: Popescu, Mircea Constantine; Weiner, Alan Lee; Tremblay, Paul A

CIPO record

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Abstract From the Canadian patent

A method for administering a compound in vivo in which the compound entrapped in a liposome the, bilayers of which comprise a salt form of an organic acid derivative of a sterol. The bilayers may comprise a tris(hydroxymethyl)aminomethane salt form of an organic acid derivative of a sterol. The invention also provides a method for the entrapment of a water-insoluble compound in sterol vesicles; a composition comprising the tris(hvdroxymethyl)aminomethane salt of cholesteryl hemisuccinate and an antifungal compound; and a method of treating a fungal infection.

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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 October 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 17, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 23, 1985
GrantedOctober 17, 1989
Term endedOctober 17, 2006
Patent numberCA 1262334 C
Classification (IPC)A61K9/52 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedSep 23, 1985Patent grantedOct 17, 1989Term endedOct 17, 2006

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