Process for dehydrohalogenating aromatic halides
CA 2006064 A1 · Owner: Abraham, Thomas J. (Jr.) · Inventors: Fugate, Eric J.; Del Dolfi, Martin; Steinmetz, Guy R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a process for dehydrohalogenating an aromatic bromide or iodide by contacting the aromatic halide with hydrogen at elevated pressure in the presence of an alkyl halide-forming compound and a Group VIII metal catalyst. The presence of the alkyl halideforming compound, such as an alkanol, diol triol or, derivative thereof, facilitates the dehydrohalogenation reaction and permits the recovery of the halogen as alkyl halides from which the bromide and iodide values can be economically recovered.
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 December 20, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2011.
- 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.