Heteroarylcarbamoylbenzene derivatives
CA 2516407 C · Owner: Hashimoto, Noriaki · Inventors: Nakashima, Hiroshi; Iino, Tomoharu; Nishimura, Teruyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds having glucokinase activating effects and being useful as treatments for diabetes, which are represented by the following formula (I) :, (see formula I) wherein X3- represents oxygen, etc. , X2 represents oxygen etc. , R1 represents a group on Ring A such as alkylsulfonyl etc. R2 , represents C3-7 cyclic alkyl optionally substituted with a halogen, etc. R3 represents a substituent on Ring B such as lower alkyl, etc. , formula (II) :, Chemical Formula 1 (see formula II), represents 6- to 10-membered aryl etc. and formula (III) : , Formula 1, (see formula III) represents monocyclic or bicyclic heteroaryl optionally having on Ring B a substituent represented by R3 above wherein …
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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 February 26, 2004 and granted July 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2026.
- 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.