Preparation of hexafluoroethane by pyrolytic decomposition of cf br
CA 2088451 A1 · Owner: Feist, Rudi · Inventors: Rieland, Matthias; Feist, Rudi; Kaudewitz, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for preparing hexafluoroethane by pyrolytic decomposition of trifluoromethyl bromide on heated contacts which are coated with or consist of a metal of the platinum group, which process enables conversion of CF3Br from e.g. fire-extinguishing apparatus or from the recovery of solvents into usable valuable substances.
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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 January 29, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 29, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 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.