Quaternary xanthinyl-alkyl-nor-tropine derivatives
CA 1061339 A · Owner: Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler · Inventors: Klingler, Karl H.; Habersang, Silke; Aurich, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides quaternary xanthinylalkylnortropine derivatives of the general formula I I, where T represents a theophyllinyl-7 radical or a theobrominyl- (1)-radical, Alk is a straight or branched chain alkylene group having 2 to 6 carbon atoms or such a group mono substituted by a hydroxyl group, the hydroxy group being bound to a carbon atom which is further bound exclusively to carbon and hydrogen, and A(-) is an equivalent to an anion of a physiologically compatible mono- or polyvalent acid useful as medicines having a spasmolytic 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
- Granted August 28, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 28, 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.