Naphthalene ureas as glucose uptake enhancers
CA 2374225 A1 · Owner: Spevak, Wayne · Inventors: Manchem, Prasad; Kozlowski, Michael R.; Lum, Robert T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I), wherein R1 and R2 are substituents on the A rings and are, independently, -SO2NR72, -C(O)NR72 -NR7SO2R7, -NR7C(O)R7, -SO2OR7, -, C(O)OR7 -OSO2R7, or -OC(O)R7, R3 and R4 are, independently hydrogen or lower , alkyl, or R3 and R4 together are -(CH2)2- -(CH2)3-, or -(CH2)4-, or R3 or R4 , may be an electron pair R5 and R6 are, independently, hydrogen alkyl, substituted alkyl, cyano, halo, nitro -SR8, -C(O)R8, -SO2OR8, -OSO2R8, -, SO2NR82 -NR8SO2R8, -OC(O)R8, -C(O)OR8, -C(O)NR82 -NR8C(O)R8, -OR8, or -NR82, each R7 and R8 is independently, hydrogen, alkyl, substituted alkyl aryl, substituted aryl, aryl(lower)alkyl substituted aryl(lower)alkyl, heteroaryl(lower)alkyl …
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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 May 25, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 25, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2022.
- 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.