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Expired European patentEurope

Fixed contact to be arranged in insulating cylinders of tap changers for transformers

EP 0123176 B1 · Applicant: TRANSFORMATOREN UNION 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 April 4, 1984 and granted August 20, 1986. A European patent lasts at most 20 years from filing, so its term ended April 4, 2004.
  • 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 4, 2009.
  • 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 4, 1984
PublishedOctober 31, 1984
GrantedAugust 20, 1986
Term endedApril 4, 2004
Application numberEP 84103725
Classification (CPC)H01H9/0016

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedApril 4, 1984PublishedOct 31, 1984Patent grantedAug 20, 1986Term endedApril 4, 2004

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.