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Expired European patentEurope

Method for stress-relieving welded joints by explosive treatment

EP 0014158 B1 · Applicant: Institut Elektrosvarki im.E.O. Patona/ E.O. Paton Institut pour le soudage électrique

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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 January 25, 1980 and granted May 28, 1986. A European patent lasts at most 20 years from filing, so its term ended January 25, 2000.
  • 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 July 25, 2005.
  • 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.
FiledJanuary 25, 1980
PublishedAugust 6, 1980
GrantedMay 28, 1986
Term endedJanuary 25, 2000
Application numberEP 80400124
Classification (CPC)C21D10/00 +2 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedJan 25, 1980PublishedAug 6, 1980Patent grantedMay 28, 1986Term endedJan 25, 2000

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.