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Expired European patentEurope

A device for improving the quality of indoor air

EP 1007887 B1 · Applicant: Thofelt, Lars

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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 18, 1997 and granted August 20, 2003. A European patent lasts at most 20 years from filing, so its term ended November 18, 2017.
  • 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 18, 2023.
  • 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 18, 1997
PublishedJune 14, 2000
GrantedAugust 20, 2003
Term endedNovember 18, 2017
Application numberEP 97913639
Classification (CPC)F24F11/30 +2 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedNov 18, 1997PublishedJune 14, 2000Patent grantedAug 20, 2003Term endedNov 18, 2017

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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