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Expired European patentEurope

Driver's brake valve for an indirectly acting compressed air brake

EP 0001303 B1 · Applicant: Werkzeugmaschinenfabrik Oerlikon-Bührle AG

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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 August 21, 1978 and granted July 23, 1980. A European patent lasts at most 20 years from filing, so its term ended August 21, 1998.
  • 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 February 21, 2004.
  • 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.
FiledAugust 21, 1978
PublishedApril 4, 1979
GrantedJuly 23, 1980
Term endedAugust 21, 1998
Application numberEP 78200148
Classification (CPC)B61H13/00 +1 more

Timeline

Timeline From EPO dates

1979198119831985198719891991199319951997Application filedAug 21, 1978PublishedApril 4, 1979Patent grantedJuly 23, 1980Term endedAug 21, 1998

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.