N-benzoyl urea compounds, antitumorous compositions containing them, and process for their preparation
CA 1266474 C · Owner: Sugi, Hideo · Inventors: Sugi, Hideo; Koyanagi, Toru; Haga, Takahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An N-benzoyl urea compound having the formula: (I), wherein X is a hydrogen atom, a halogen atom or a nitro group, n is an integer of from 1 to 3, and Q is wherein Y1 is an unsubstituted or substituted alkyl group, or an alkoxy or alkoxycarbonyl group with its alkyl moiety unsubstituted or substituted Y2 is a, hydrogen atom, a halogen atom a nitro group, an, unsubstituted or substituted alkyl group or an alkoxy or, alkoxycarbonyl group with its alkyl moiety unsubstituted or substituted, Z is a hydrogen atom, a halogen atom a, trifluoromethyl group or a nitro group and each of A and, B is =CH- or a nitrogen atom provided that one of A and, B is =CH- and the other is a nitrogen atom with the, …
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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 March 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 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.