Process for preparing hypolipidaemiant products
CA 1069523 A · Owner: Orchimed S.A. · Inventors: Mieville, Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a method of preparing a compound of the formula:, (II), in which A is a methyl ethyl, n-propyl, isopropyl, n-butyl, isobutyl or cyclo-hexyl group or a group of formula, , or , where each of X1, X2 and X3 which are identical or, dirrerent is H Cl, Br, F, CF3, NO2, NH2, OH, C1-4, alkyl C1-4 alkoxy, benzyloxy, acetamido, acetoxy CHO, COOH, a radical, , where Y is OH or C1-4 alkoxy; X6 is O or S; and X7 is H, Cl or Br; each of R, X4 and X5 which are identical or different, is hydrogen or C1-4 alkyl; Y is H, OH, OM (where M is a metallic residue) C1-12, alkoxy, in which the chain is straight or branched C3-8, cyclcalkyloxy, C1-4 alkylthlo, 2,3-dihydroxypropyloxy …
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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.