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Expired Canadian patentCanada

7-oxabicycloheptane substituted thio prostaglandin analogs

CA 1257287 A · Owner: Squibb (E.R.) & Sons, Inc. · Inventors: Haslanger, Martin F.; Hall, Steven E.

CIPO record

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Abstract From the Canadian patent

7-OXABICYCLOHEPTANE SUBSTITUTED THIO PROSTAGLANDIN ANALOGS, 7-Oxabicycloheptane substituted thio prostaglandin analogs are provided having the structural formula, wherein p is 0 to 4; A is CH=CH (CH2)2, or a, single bond; m is 0 to 8; R is H lower alkyl, alkali metal or tris(hydroxymethyl)aminomethane; n is 1 to 4; n' is 0, 1 or 2; q is 1 to 12; X is , wherein R2 and R3 may be the same, or different and are H or lower alkyl; t is 0 to 5; and R1 is H, lower alkyl, aryl, aralkyl cycloalkyl, or cycloalkylalkyl, and including all stereoisomers thereof. The compounds are cardiovascular agents and antlinflammatory agents useful, for example in, the treatment of thrombolytlc diseasa inflammation, …

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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 July 11, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 11, 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.
FiledMay 30, 1985
GrantedJuly 11, 1989
Term endedJuly 11, 2006
Patent numberCA 1257287 A
Classification (IPC)C07D493/08 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedMay 30, 1985Patent grantedJuly 11, 1989Term endedJuly 11, 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.