Antianaphylactic and antibronchospastic n- benzhydryldiazacycloalkylalkananilides
CA 1269980 C · Owner: Leonardi, Amedeo · Inventors: Cazzulani, Pietro; Motta, Gianni; Nardi, Dante
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New piperazine derivatives of general formula: are described, wherein, R is hydrogen or lower alkyl A is straight of branched lower alkyl, and R1 and R2 are respectively hydrogen, amino, alkylamino, dialkylamino mono or di(hyroxyalkyl) amino, imidazolyl, morpholino, piperidino N-alkylpiperazino, 1,3-dithiolan-2-ylidinamio N-alkylureido, but R1, and R2 are not both hydrogen, isomers mixture thereof, individual enantiomers and pharmaceutically acceptable acid addition salts thereof. The new compounds exhibit a high antianaphylactic and antibronchospastic 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 June 5, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 2007.
- 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.