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Expired European patentEurope

Process and apparatus for degassing and maintaining a low hydrogen content in molten aluminium alloys during transport in ladles

EP 0403406 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 June 11, 1990 and granted March 16, 1994. A European patent lasts at most 20 years from filing, so its term ended June 11, 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 December 11, 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.
FiledJune 11, 1990
PublishedDecember 19, 1990
GrantedMarch 16, 1994
Term endedJune 11, 2010
Application numberEP 90420277
Classification (CPC)C22B21/064

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedJune 11, 1990PublishedDec 19, 1990Patent grantedMarch 16, 1994Term endedJune 11, 2010

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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