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Expired European patentEurope

Process and apparatus for measuring the temperature and the bath level of molten electrolyte in aluminum winning cells

EP 0716165 B1 · Applicant: ALUMINIUM PECHINEY

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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.

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Why it's free to use

  • Filed December 7, 1995 and granted July 8, 1998. A European patent lasts at most 20 years from filing, so its term ended December 7, 2015.
  • 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 June 7, 2021.
  • 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.
FiledDecember 7, 1995
PublishedJune 12, 1996
GrantedJuly 8, 1998
Term endedDecember 7, 2015
Application numberEP 95420354
Classification (CPC)C25C3/20

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedDec 7, 1995PublishedJune 12, 1996Patent grantedJuly 8, 1998Term endedDec 7, 2015

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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