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Expired European patentEurope

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EP 0029357 B1 · Applicant: COMPAGNIE FRANCAISE DES ISOLANTS

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 14, 1980 and granted June 20, 1984. A European patent lasts at most 20 years from filing, so its term ended November 14, 2000.
  • 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 14, 2006.
  • 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 14, 1980
PublishedMay 27, 1981
GrantedJune 20, 1984
Term endedNovember 14, 2000
Application numberEP 80304097
Classification (CPC)F24C15/04

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedNov 14, 1980PublishedMay 27, 1981Patent grantedJune 20, 1984Term endedNov 14, 2000

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.