Indolylpropanols, process for their preparation and their use and preparations containing the compounds
CA 2033771 C · Owner: Beiersdorf-Lilly Gmbh · Inventors: Armah, Ben; Stenzel, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Indolylpropanols of the formula I, (see formula I) in which R1 and R2, which can be identical or different in each case denote a 2-, 3- or 4-pyridinyl or a 2- or 3-thienyl radical, phenyl or phenyl which is optionally monosubstituted or identically or differently disubstituted by halogen, alkyl, C3-7-cycloalkyl or C1-6-alkoxy where, alkyl denotes straight-chain alkyl having 1 to 6 carbon atoms or branched alkyl having 3 to 6 carbon atoms and, their salts acid acid addition salts tautomers and, optical isomers show positive inotropic and antiarrhythmic activity.
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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
- Filed January 8, 1991 and granted March 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2013.
- 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.