Electrochemical method of surface treating carbon; carbon, in particular carbon fibers, treated by the method, and composite material including such fibers
CA 1324978 C · Owner: Sanchez, Manuel · Inventors: Sanchez, Manuel; Desarmot, Georges; Barbier, Blandine
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method is of the type in which carbon (3) is put into contact with a solution (2) of an amine compound in a bipolar solvent with the carbon being positively polarized relative to a cathode (5). According to the invention the solvent is an, organic compound, preferably an aprotic compound having a high, anode oxidation potential and the solution is practically free, from water.
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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
- Granted December 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 2010.
- 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.