Novel substituted 4-(1h-benzimidazol-2-yl)1,4diazepanes useful for the treatment of allergic diseases
CA 2241827 C · Owner: Burkholder, Timothy P. · Inventors: Maynard, George D.; Kane, John M.; Kudlacz, Elizabeth M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel 4-(1H-benzimidazol-2-yl) 1,4diazepane derivatives of formula (1) and stereoisomers thereof and pharmaceutically , acceptable salts thereof which are useful as histamine receptor antagonists and tachykinin receptor antagonist. Such antagonists are useful in the treatment of allergic rhinitis, including seasonal rhinitis and sinusitis; inflammatory bowel diseases, including Crohn's disease and ulcerative colitis; asthma; bronchitis; and emesis.
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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 December 4, 1996 and granted April 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2018.
- 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.