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Expired European patentEurope

Device for the production of tubes by helically winding a preferably corrugated strip

EP 0042011 B1 · Applicant: Fritz Hahn GmbH & Co. KG

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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 September 20, 1980 and granted May 16, 1984. A European patent lasts at most 20 years from filing, so its term ended September 20, 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 March 20, 2006.
  • 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.
FiledSeptember 20, 1980
PublishedDecember 23, 1981
GrantedMay 16, 1984
Term endedSeptember 20, 2000
Application numberEP 80105664
Classification (CPC)B21C37/12 +1 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedSep 20, 1980PublishedDec 23, 1981Patent grantedMay 16, 1984Term endedSep 20, 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.