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Expired European patentEurope

Method of making silicon carbide fibres and fibrous products

EP 0141978 B1 · Applicant: Hutschenreuther 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 September 21, 1984 and granted March 25, 1987. A European patent lasts at most 20 years from filing, so its term ended September 21, 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 21, 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 21, 1984
PublishedMay 22, 1985
GrantedMarch 25, 1987
Term endedSeptember 21, 2004
Application numberEP 84111278
Classification (CPC)C04B35/62227

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedSep 21, 1984PublishedMay 22, 1985Patent grantedMarch 25, 1987Term endedSep 21, 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

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