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Expired European patentEurope

Process and apparatus for the direct electrical heating of concrete

EP 0000298 B1 · Applicant: S.R.L. OMNIUM TECHNIQUE D'ETUDES ET DE PRECONTRAINTE "OTEP"

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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 June 1, 1978 and granted April 8, 1987. A European patent lasts at most 20 years from filing, so its term ended June 1, 1998.
  • 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 December 1, 2003.
  • 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.
FiledJune 1, 1978
PublishedJanuary 10, 1979
GrantedApril 8, 1987
Term endedJune 1, 1998
Application numberEP 78400007
Classification (CPC)B28B11/242 +2 more

Timeline

Timeline From EPO dates

1979198119831985198719891991199319951997Application filedJune 1, 1978PublishedJan 10, 1979Patent grantedApril 8, 1987Term endedJune 1, 1998

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.