Heterocyclic oxypropanolamine derivatives
CA 1134827 A · Owner: Boehringer Mannheim G.M.B.H. · Inventors: Dietmann, Karl; Ross, Carl H.; Wiedemann Fritz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides heterocyclic oxypropanol derivatives of the general formula:wherein R1 is a hydrogen atom or a lower alkyl aralkyl, or lower alkanoyl radical, R2 and R3 which can be the, same or different, are hydrogen atoms or lower alkyl hydroxyalkyl, alkoxycarbonyl or alkanoyloxyalkyl radicals or together represent an alkylene radical R4 is a, hydrogen atom or a lower alkanoyl radical or an aroyl radical, R5 is a hydrogen atom or a lower alkyl radical or an aralkyl radical, R6 is a hydrogen atom or a lower alkyl radical, R7 is a hydrogen atom, a hydroxyl group or a lower alkyl radical, Z is a valency bond a, methylene radical or an oxygen or sulphur atom Ar 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 November 2, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 1999.
- 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.