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Expired European patentEurope

Process for chromium plating the inner surface of tubes, anode used in this process

EP 0084752 B1 · Applicant: ETAT-FRANCAIS représenté par le DELEGUE GENERAL POUR L'ARMEMENT

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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 30, 1982 and granted March 5, 1986. A European patent lasts at most 20 years from filing, so its term ended December 30, 2002.
  • 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 30, 2008.
  • 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 30, 1982
PublishedAugust 3, 1983
GrantedMarch 5, 1986
Term endedDecember 30, 2002
Application numberEP 82402398
Classification (CPC)C25D7/04

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedDec 30, 1982PublishedAug 3, 1983Patent grantedMarch 5, 1986Term endedDec 30, 2002

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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