Process and solvent for extraction of the chromates present in an aqueous solution
CA 1196619 A · Owner: Krebs & Cie S.A. · Inventors: Beutier, Didier; Pasquier, Gilles; Palvadeau, Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
IN THE CANADIAN PATENT & TRADEMARK OFFICE PATENT APPLICATION, entitled: Process and solvent for extraction of the chromates present in an aqueous solution, in the names of: Didier Beutier Claude Palvadeau, Gilles Pasquier, Marc Dietrich assigned to: Krebs & Cie S.A. ABSTRACT OF THE DISCLOSURE: The invention relates to a process and a solvent for extraction of the chromates present in an aqueous solution. According to the invention the aqueous phase is brought into, contact with an organic phase comprising 2 to 10% by volume of a solvent selected from the group of tertiary or quaternary amines and 15 to 40% of a solvent selected from the group of esters of phosphoric acid in a diluent based …
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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 November 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.