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Expired European patentEurope

Regulating method for a fluid cylinder

EP 0177481 B1 · Applicant: HOERBIGER VENTILWERKE AKTIENGESELLSCHAFT

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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 10, 1985 and granted December 2, 1987. A European patent lasts at most 20 years from filing, so its term ended September 10, 2005.
  • 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 10, 2011.
  • 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 10, 1985
PublishedApril 9, 1986
GrantedDecember 2, 1987
Term endedSeptember 10, 2005
Application numberEP 85890218
Classification (CPC)F15B9/03

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedSep 10, 1985PublishedApril 9, 1986Patent grantedDec 2, 1987Term endedSep 10, 2005

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

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