Pyridylketoxime ether compound and pharmaceutical composition containing it
CA 2001182 A1 · Owner: Muraoka, Kanji · Inventors: Watanabe, Makoto; Ishiyama, Nobuo; Muraoka, Kanji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pyridylketoxime ether compound of the formula: (I), wherein Ar is a phenyl, naphthyl or heterocyclic group unsubstituted or substituted by a Cl-C8 alkyl group a, C1-C8 alkylamino group, a Cl-C8 alkoxy group a Cl-C8, alkoxycarbonyl group, a trifluoromethyl group a ni.tro, group or a halogen atom, X is a -(CH2)m- group wherein m is an integer of from 1 to 5 a -(CH2)m-Y- group wherein Y is an oxygen or sulfur atom and m is as defined above or a -CH2-(CH=CH)n- group wherein n is an integer of 1 or 2, and R is a phenyl, naphthyl, C3-C8 cycloalkyl or heterocyclic group unsubstituted or substituted by a Cl- C8 alkyl group, a Cl-C8 alkylamino group a Cl-C8 alkoxy, group, a Cl-C8 alkoxycarbonyl …
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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 October 23, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 23, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2011.
- 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.