1-alkyl substitued benzimidazole derivatives
CA 1266048 C · Owner: Janssens, Frans Eduard · Inventors: Janssens, Frans Eduard; Sommen, Francois Maria; Diels, Gaston Stanislas Marcella
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel 1-alkyl substituted benzimidazole derivatives and their pharmaceutically acceptable acid addition salts having antihistaminic properties, compositions containing the same and methods, of treating allergic diseases in warm-blooded animals. The benzimidazole derivatives of the present invention have the general formula,
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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 February 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 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.