Canadian application, no grantCanada
Process for the dehalogenation of thiochroman and dihydrobenzothiophene derivatives
CA 2334478 A1 · Owner: Drabb, Thomas Walter Jr. · Inventors: Drabb, Thomas Walter Jr.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a process for the dehalogenation of a compound of formula (II) via the use of a transition metal catalyst and ammonium formate at atmospheric pressure.
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 March 14, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 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.
FiledMarch 14, 2000
GrantedNo grant recorded
Term endedMarch 14, 2020
Patent numberCA 2334478 A1
Classification (IPC)C07D335/06 +2 more
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.