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Expired European patentEurope

Method of producing preforms of cadmium-free silver-metal oxide compound materials for electric contacts

EP 0080641 B1 · Applicant: SIEMENS 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 November 15, 1982 and granted August 28, 1985. A European patent lasts at most 20 years from filing, so its term ended November 15, 2002.
  • 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 May 15, 2008.
  • 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.
FiledNovember 15, 1982
PublishedJune 8, 1983
GrantedAugust 28, 1985
Term endedNovember 15, 2002
Application numberEP 82110530
Classification (CPC)H01H1/02372

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedNov 15, 1982PublishedJune 8, 1983Patent grantedAug 28, 1985Term endedNov 15, 2002

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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