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Expired European patentEurope

Gas flushing plug for metallurgical vessels

EP 0148336 B1 · Applicant: Radex Deutschland Aktiengesellschaft für feuerfeste Erzeugnisse

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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 October 15, 1984 and granted August 19, 1987. A European patent lasts at most 20 years from filing, so its term ended October 15, 2004.
  • 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 April 15, 2010.
  • 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.
FiledOctober 15, 1984
PublishedJuly 17, 1985
GrantedAugust 19, 1987
Term endedOctober 15, 2004
Application numberEP 84112403
Classification (CPC)B22D1/005

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedOct 15, 1984PublishedJuly 17, 1985Patent grantedAug 19, 1987Term endedOct 15, 2004

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.