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Expired European patentEurope

A heat installation for premises with water as a heat transmitting medium

EP 0401237 B1 · Applicant: HAMMARSTEDT, Curt

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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 February 6, 1989 and granted April 27, 1994. A European patent lasts at most 20 years from filing, so its term ended February 6, 2009.
  • 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 August 6, 2014.
  • 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.
FiledFebruary 6, 1989
PublishedDecember 12, 1990
GrantedApril 27, 1994
Term endedFebruary 6, 2009
Application numberEP 89902180
Classification (CPC)F24D19/0009 +2 more

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedFeb 6, 1989PublishedDec 12, 1990Patent grantedApril 27, 1994Term endedFeb 6, 2009

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.