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Expired European patentEurope

Thermoexpandable sealing material for cracks, interstices or the like and process for sealing walls or doors in case of fire

EP 0009109 B1 · Applicant: CHEMIE LINZ 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 August 9, 1979 and granted September 30, 1981. A European patent lasts at most 20 years from filing, so its term ended August 9, 1999.
  • 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 February 9, 2005.
  • 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.
FiledAugust 9, 1979
PublishedApril 2, 1980
GrantedSeptember 30, 1981
Term endedAugust 9, 1999
Application numberEP 79102882
Classification (CPC)C09K3/1028

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedAug 9, 1979PublishedApril 2, 1980Patent grantedSep 30, 1981Term endedAug 9, 1999

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.