Apparatus for the continuous production of a multivalent metal by electrolysis of a halide thereof dissolved in a molten bath

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

• Filed April 19, 1990 and granted June 16, 1993. A European patent lasts at most 20 years from filing, so its term ended April 19, 2010.
• A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by October 19, 2015.
• We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.