Lipf6 production process
CA 2259985 A1 · Owner: Schade, Klaus · Inventors: Schade, Klaus; Wietelmann, Ulrich
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 LiPF6 production process wherein LiF is reacted , with PCl5 or PCl3 at a temperature of -20 to 300 ~C for a reaction time of 0.1 to 10 hours to give LiPF6, and LiPF6 is isolated as a solution from the reaction mixture, using ether, nitrile sulphone, carbonate, halogenated , hydrocarbon and/or tertiary amines as the solubilizing agent.
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 August 11, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 11, 2019.
- 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.