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Expired European patentEurope

Filler for an acetylene storage vessel

EP 0056645 B1 · Applicant: N I INDUSTRIES INC

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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 18, 1982 and granted April 29, 1987. A European patent lasts at most 20 years from filing, so its term ended January 18, 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 July 18, 2007.
  • 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 18, 1982
PublishedJuly 28, 1982
GrantedApril 29, 1987
Term endedJanuary 18, 2002
Application numberEP 82100325
Classification (CPC)C04B28/18 +2 more

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedJan 18, 1982PublishedJuly 28, 1982Patent grantedApril 29, 1987Term endedJan 18, 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

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