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Expired European patentEurope

Circular staircase

EP 0757741 B1 · Applicant: Wachenfeld, Walter

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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 April 15, 1995 and granted September 17, 1997. A European patent lasts at most 20 years from filing, so its term ended April 15, 2015.
  • 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 October 15, 2020.
  • 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.
FiledApril 15, 1995
PublishedFebruary 12, 1997
GrantedSeptember 17, 1997
Term endedApril 15, 2015
Application numberEP 95915795
Classification (CPC)E04F11/032

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedApril 15, 1995PublishedFeb 12, 1997Patent grantedSep 17, 1997Term endedApril 15, 2015

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.