Phenylsulfonamide-phenylethylamines useful as dopamine receptors
CA 2327345 A1 · Owner: Leiby, Jeffrey A. · Inventors: Romero, Arthur Glenn; Leiby, Jeffrey A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I) and their pharmaceutically acceptable slats having selective dopamine D3 receptor activity suitable for treating central nervous system disorders. In formula (I) R1 is independently H or a C1-C8 alkyl including isomeric forms thereof; R2 is H C1-C3 alkyl, a halogen, OCH3, OCF3, CF3 CN, SCH3 or NHCOCH3; and R3 is H, C1-C3 alkyl a halogen, OCH3, OCF3, CF3, CN, SCH3 or NHCOCH3.
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 May 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2021.
- 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.