Phenyl-alkane-carboxylic acid derivatives
CA 1047513 A · Owner: Boehringer Mannheim G.M.B.H. · Inventors: Kuhnle, Hans-Frieder; Stach, Kurt; Bosies, Elmar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New phenyl-alkane-carboxylic acid derivatives and their process of preparation are provided of formula (I):- (I), wherein A is a radical selected from the group consisting of unsubstituted aryl, substituted aryl unsubstituted, aralkyl, substituted aralkyl unsubstituted arylvinyl or, substituted arylvinyl the substituents in said substituted, radicals being selected from hydroxy halogen, trifluoromethyl, alkyl, alkylthio alkoxy, alkenyloxy, alkoxyalkoxy, alkylsubstituted amino, aryloxy or alkoxy -substituted aryloxy or, A is an aryloxyalkyl, arylthioalkyl radical unsubstituted, heterocyclic ring system or substituted heterocyclic ring system, substituted by halogen, alkyl or alkoxy Y is a, …
Read the whole patent
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 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 1996.
- 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.