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Expired European patentEurope

Heating element for gas-fired domestic hot-water central-heating boilers

EP 0030183 B1 · Applicant: SAUNIER DUVAL EAU CHAUDE CHAUFFAGE S.D.E.C.C. - Société anonyme

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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 November 19, 1980 and granted January 18, 1984. A European patent lasts at most 20 years from filing, so its term ended November 19, 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 19, 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 19, 1980
PublishedJune 10, 1981
GrantedJanuary 18, 1984
Term endedNovember 19, 2000
Application numberEP 80401656
Classification (CPC)F28F1/02 +1 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedNov 19, 1980PublishedJune 10, 1981Patent grantedJan 18, 1984Term endedNov 19, 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

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