Substituted hexatriene derivatives, their preparation and use
CA 1262910 C · Owner: Schmieder, Klaus · Inventors: Paust, Joachim; Nuerrenbach, Axel; Schmieder, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substituted hexatriene derivatives of the formula (I):, (I), where R1 is methyl, nitrile C2-C10-ketal, tetrazolyl, -CH2OR2, -CH2NR3R4 or -COR5 where R2 is hydrogen, C1-4-, alkyl, C1-20-alkanoyl or unsubstituted benzoyl or benzoyl substituted by methyl, methoxy, halogen or nitro R3 and R4, are hydrogen, C1-6-alkanoyl or unsubstituted benzoyl or benzoyl substituted by methyl, methoxy halogen or nitro, and R5 is hydrogen, C1-4-alkyl halogen, -OR6 or -NR7R8, where R6 is hydrogen unsubstituted or hydroxyl-substituted, C1-6-alkyl phenyl or aralkyl, and R7 and R8 are hydrogen unsubstituted or hydroxyl-substituted C1-6-alkyl phenyl or, aralkyl, and, where relevant their physiologically, tolerated …
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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 November 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 14, 2006.
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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.