Process for disposing of halons or halon-containing fluorocarbons or chlorofluorocarbons
CA 2092777 C · Owner: Deger, Hans-Matthias · Inventors: Deger, Hans-Matthias; Hug, Siegismut; Jansen, Rolf-Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for disposing of bromofluorocarbons or bromochlorofluorocarbons (termed halons below) or mixtures thereof with fluorocarbons (FCs) or chlorofluorocarbons (CFCs). The invention comprises thermally cleaving halons or halon-containing FCs or halon-containing CFCs for, example by means of an oxyhydrogen flame cooling the, resulting gas stream, oxidizing the hydrogen bromide formed in the cleavage to bromine by feeding excess elemental chlorine into the gas stream absorbing the, resulting HF or HCl from the gas stream with recovery of hydrofluoric acid or hydrochloric acid and finally separating elemental bromine and chlorine from each other by distillation or …
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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 March 26, 1993 and granted June 24, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2015.
- 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.