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Expired European patentEurope

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EP 0143232 B1 · Applicant: SUMITOMO ELECTRIC INDUSTRIES LIMITED

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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 13, 1984 and granted July 12, 1989. A European patent lasts at most 20 years from filing, so its term ended September 13, 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 March 13, 2010.
  • 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 13, 1984
PublishedJune 5, 1985
GrantedJuly 12, 1989
Term endedSeptember 13, 2004
Application numberEP 84110960
Classification (CPC)G03G15/2025

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedSep 13, 1984PublishedJune 5, 1985Patent grantedJuly 12, 1989Term endedSep 13, 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.