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Expired Canadian patentCanada

Pharmaceutical compositions containing 1,3-dioxane alkenoic acid derivatives

CA 1308660 C · Owner: Imperial Chemical Industries Plc · Inventors: Brewster, Andrew G.; Brown, George R.; Smithers, Michael J.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention concerns novel pharmaceutical compositions containing a 4(Z)-6-(2,4-diphenyl-1,3-dioxan-5-yl)alkenoic acid which antagonises one or more of the actions of thromboxane A2, together with a compound which inhibits the synthesis of thromboxane A2. The compositions are useful as medicines in treating a variety of diseases or medical conditions in which thromboxane A2 and/or other prostanoid contractile substances are involved.

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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 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 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.
FiledNovember 3, 1987
GrantedOctober 13, 1992
Term endedOctober 13, 2009
Patent numberCA 1308660 C
Classification (IPC)A61K31/33 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 3, 1987Patent grantedOct 13, 1992Term endedOct 13, 2009

Sources & verification

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