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Expired European patentEurope

Heat storage

EP 1010961 B1 · Applicant: Kalkgruber, Johann

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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 December 14, 1999 and granted January 28, 2004. A European patent lasts at most 20 years from filing, so its term ended December 14, 2019.
  • 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 14, 2025.
  • 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 14, 1999
PublishedJune 21, 2000
GrantedJanuary 28, 2004
Term endedDecember 14, 2019
Application numberEP 99890386
Classification (CPC)F28D20/0039

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedDec 14, 1999PublishedJune 21, 2000Patent grantedJan 28, 2004Term endedDec 14, 2019

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.