Quinoline compound
CA 2464981 A1 · Owner: Kato, Koki · Inventors: Kato, Koki; Ishihara, Yuji; Kamata, Makoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound represented by the formula (I) wherein Ar represents an optionally substituted cyclic group; X represents a bond or a spacer having a C1-6 main chain; R1 and R2 are the same or different and each represents hydrogen or an optionally substituted hydrocarbon group or R1 and R2 may form an optionally substituted nitrogenous heterocycle in cooperation with the adjacent nitrogen atom; Y represents an optionally substituted divalent hydrocarbon group (excluding CO); R3 represents hydrogen or an optionally substituted hydrocarbon group; and ring A and ring B each may have other substituent(s) and when ring B has another substituent then this substituent may be bonded , to R1 to …
Read the whole patent
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 24, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 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.