Fused 1,2,4-thiadiazine derivatives, their preparation and use
CA 2294830 A1 · Owner: Mogensen, John Patrick · Inventors: Nielsen, Flemming Elmedlund; Hansen, Holger Claus; Hansen, John Bondo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1,2,4-Thiadiazine and 1,4-thiazine derivates represented by formula (I) wherein A, B, D, R1, R2, R3 and R4 are defined in the description compositions thereof and methods for preparing the compounds are described. The compounds are useful in the treatment of diseases of the central nervous system, the cardiovascular system, the pulmonary system the gastrointestinal , system and the endocrinological system.
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 June 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2020.
- 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.