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Expired European patentEurope

Process for manufacturing welded ferritic-austenitic CrNiMo steel structures

EP 0089943 B1 · Applicant: VEREINIGTE EDELSTAHLWERKE AKTIENGESELLSCHAFT (VEW)

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Overview

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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 February 18, 1983 and granted October 23, 1985. A European patent lasts at most 20 years from filing, so its term ended February 18, 2003.
  • 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 August 18, 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.
FiledFebruary 18, 1983
PublishedSeptember 28, 1983
GrantedOctober 23, 1985
Term endedFebruary 18, 2003
Application numberEP 83890023
Classification (CPC)C22C38/58 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedFeb 18, 1983PublishedSep 28, 1983Patent grantedOct 23, 1985Term endedFeb 18, 2003

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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