Pharmaceuticals containing acylated benzilic acid derivatives for influencing the tone of the urinary bladder
CA 1321591 C · Owner: Ritter, Helmut · Inventors: Laven, Reinhard; Pein, Eckhart; Ritter, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Certain acylated benzilic acid derivatives are useful for influencing therapeutically the tone of the urinary bladder in humans and animals. These derivatives are N-alkyl-4-piperidyl .alpha..alpha.-diphenyl-.alpha.acyloxyacetates having the formula, (I) wherein R is H, CH3, C2H5 or C3H7; R' is H NH2, phenyl, carboxyphenyl, (C1-C6)alkyl hydroxy(C1-, C6)alkyl, methoxy, ethoxy methoxymethyl, ethoxy-, methyl, amino(C1-C6)alkyl which can be substituted in the alkyl radical by one or more of a -NH2 -COOH or, -SCH3 group, N-acetylamino(C1-C6)alkyl or a group, having the formula, - CH = CH-COOR" or - (CH2)n - COOR" where n is an integer from 0 to 8, and R" is H CH3, C2H5, C3H7, or a …
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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 24, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 24, 2010.
- 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
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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.