Treatment process for a carbon material
CA 2230948 A1 · Owner: Alcatel Alsthom Compagnie Generale D'Electricite · Inventors: Feyrin, Sylvie; Galaj, Stanislas; Biensan, Philippe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process for producing electrode active material for an electrochemical generator the said active material being composed of crystallized carbon particles capable of taking lithium into their structure comprising at least the following steps: a solution is prepared in a chemically inert volatile solvent of at least one compound comprised of many molecules capable of creating a covalent bond with a oxygenated functional group which comprises at least one organometallic compound selected from a borane a phosphate, an organophosphorus compound an organotin, an organotungsten, an organotitanium and polymethyl hydroxysiloxane; the said particles are immersed in …
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 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 2020.
- 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.