2-iminopyrrolidine derivatives
CA 2446924 C · Owner: Kimura, Akifumi · Inventors: Sato, Nobuaki; Kotake, Makoto; Terauchi, Taro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A 2-iminopyrrolidine derivative represented by the formula:, (see formula I), {wherein ring B represents a benzene ring pyridine , ring, etc.; R101 - R103 represent hydrogen halogen, C1-6 , alkyl, etc.; R5 represents hydrogen C1-6, alkyl, C1-6 , alkoxy-C1-6 alkyl, etc.; R6 represents hydrogen C1-6, alkyl, C1-6 alkyloxycarbonyl, etc.; Y1 represents a single bond, -CH2-, etc.; Y2 represents a single bond -CO-, etc.; and Ar represents hydrogen a group , represented by the formula:, (see formula II) wherein R10-R14 represent hydrogen, C1-6 alkyl hydroxyl, C1-6 alkoxy, etc.; and R11 and R12 or R12 and R13 may bond together to form a 5- to 8-membered heterocyclic ring etc.), or a salt thereof.
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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 April 19, 2002 and granted February 8, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2024.
- 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.