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Expired European patentEurope

Fiber composition, use and method for making the same, heat exchange element, heat exchange system and the use of the same.

EP 1669682 B1 · Applicant: Götz, Thomas

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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 7, 2004 and granted July 16, 2014. A European patent lasts at most 20 years from filing, so its term ended December 7, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 7, 2004
PublishedJune 14, 2006
GrantedJuly 16, 2014
Term endedDecember 7, 2024
Application numberEP 04405755
Classification (CPC)F28F21/00 +1 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedDec 7, 2004PublishedJune 14, 2006Patent grantedJuly 16, 2014Term endedDec 7, 2024

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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