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Expired European patentEurope

Device for lining the inner walls of industrial furnaces

EP 0013039 B1 · Applicant: Uhde GmbH

EPO PDF

Overview

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

Read the whole patent

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.

Why it's free to use

  • Filed December 4, 1979 and granted October 28, 1981. A European patent lasts at most 20 years from filing, so its term ended December 4, 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 June 4, 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.
FiledDecember 4, 1979
PublishedJuly 9, 1980
GrantedOctober 28, 1981
Term endedDecember 4, 1999
Application numberEP 79200724
Classification (CPC)F27D1/144 +1 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedDec 4, 1979PublishedJuly 9, 1980Patent grantedOct 28, 1981Term endedDec 4, 1999

Sources & verification